U.S. Secretary for Defense Lloyd J. Austin III, left, shakes hands with NATO Secretary General Jens Stoltenberg during opening remarks prior to a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, shakes hands with NATO Secretary General Jens Stoltenberg during opening remarks prior to a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, walks with NATO Secretary General Jens Stoltenberg prior to a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, walks with NATO Secretary General Jens Stoltenberg prior to a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, shakes hands with NATO Secretary General Jens Stoltenberg prior to a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

Portugal's Defense Minister Helena Carreiras, left, speaks with British Defense Minister Ben Wallace during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, right, speaks with British Defense Minister Ben Wallace during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, center right, speaks with British Defense Minister Ben Wallace during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III arrives for a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III arrives for a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

British Defense Minister Ben Wallace, right, shakes hands with Portugal's Defense Minister Helena Carreiras during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, right, and NATO Secretary General Jens Stoltenberg arrives for a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, center, and NATO Secretary General Jens Stoltenberg, left, arrive for a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III arrives for a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, center, waits for the start of a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

A general view of the North Atlantic Council during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

Canadian Defense Minister Anita Anand, left, speaks with U.S. Secretary for Defense Lloyd J. Austin III during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

From left, Canadian Defense Minister Anita Anand, NATO Secretary General Jens Stoltenberg, U.S. Secretary for Defense Lloyd J. Austin III and British Defense Minister Ben Wallace during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

Latvia's Defense Minister Artis Pabriks, left, speaks with Luxembourg's Defense Minister Francois Bausch during a meeting of NATO defense ministers at NATO headquarters in Brussels, Thursday, June 16, 2022. NATO defense ministers on Thursday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Defense Secretary Lloyd Austin arrives for a meeting with Ukraine's Defense Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin, left, shakes hands with Ukraine's Defense Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin, left, shakes hands with Ukraine's Defense Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin, left, shakes hands with Ukraine's Defense Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin, left, poses with Ukraine's Defense Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin, left, shakes hands with Ukraine's Defense Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin, left, greets Ukraine's Defense Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

Ukraine's Defense Minister Oleksii Reznikov, left, walks with Canadian Defense Minister Anita Anand, second right, ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin, left, greets Ukraine's Defense Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin attends the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

From left, U.S. Chairman of the Joint Chiefs of Staff General Mark Milley, U.S. Defense Secretary Lloyd Austin and Ukraine's Defense Minister Oleksii Reznikov attend the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

From left, U.S. Assistant Secretary of Defense for International Security Affairs Celeste A. Wallander, U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley, U.S. Defense Secretary Lloyd Austin, Ukraine's Defense Minister Oleksii Reznikov and Ukrainian Lieutenant General Levgen Moisuk attend the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin attends the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin speaks next to Ukraine's Defense Minister Oleksii Reznikov as they attend the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

U.S. Defense Secretary Lloyd Austin attends the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

A general view of the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

From left, NATO Secretary General Jens Stoltenberg, Supreme Allied Commander Europe, General Tod D. Wolters, U.S. Assistant Secretary of Defense for International Security Affairs Celeste A. Wallander, U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley, U.S. Defense Secretary Lloyd Austin, Ukraine's Defense Minister Oleksii Reznikov, Ukrainian Lieutenant General Levgen Moisuk and other officials the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

Ukraine's Defense Minister Oleksii Reznikov arrives for the Ukraine Defense Contact group meeting ahead of a NATO defense ministers' meeting at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (Yves Herman, Pool Photo via AP)

Flags of NATO member countries flap in the wind outside NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers attending a two-day meeting starting Wednesday will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, and U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley participate in a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, and U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley participate in a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley speaks during a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, and U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley participate in a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

A journalist raises a hand to ask a question during a media conference given by U.S. Secretary for Defense Lloyd J. Austin III, left, and U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, and U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley participate in a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III, left, and U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley participate in a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III gathers his papers at the end of a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III leaves the room at the end of a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Secretary for Defense Lloyd J. Austin III carries his papers at the end of a media conference at NATO headquarters in Brussels, Wednesday, June 15, 2022. NATO defense ministers, attending a two-day meeting starting Wednesday, will discuss beefing up weapons supplies to Ukraine, and Sweden and Finland's applications to join the transatlantic military alliance. (AP Photo/Olivier Matthys)

U.S. Defense Secretary Lloyd Austin arrives for a meeting with Ukraine's Defence Minister Oleksii Reznikov ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / X00380 / AFP)

U.S. Defense Secretary Lloyd Austin (L) shakes hands with Ukraine's Defence Minister Oleksii Reznikov (R) ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / X00380 / AFP)

U.S. Defense Secretary Lloyd Austin (L) shakes hands with Ukraine's Defence Minister Oleksii Reznikov (R) ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / X00380 / AFP)

U.S. Defense Secretary Lloyd Austin (L) shakes hands with Ukraine's Defence Minister Oleksii Reznikov (R) ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

U.S. Defense Secretary Lloyd Austin (L) poses with Ukraine's Defence Minister Oleksii Reznikov (R) ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

U.S. Defense Secretary Lloyd Austin (L) and Ukraine's Defence Minister Oleksii Reznikov (R) react ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

US Defense Secretary Lloyd Austin (L) shakes hands with Ukraine's Defence Minister Oleksiy Reznikov ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

LtoR, U.S. Assistant Secretary of Defense for International Security Affairs Celeste A. Wallander, U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley, U.S. Defense Secretary Lloyd Austin, Ukraine's Defence Minister Oleksii Reznikov and Ukrainian Lieutenant General Levgen Moisuk attend the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

LtoR, U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley, U.S. Defense Secretary Lloyd Austin, Ukraine's Defence Minister Oleksii Reznikov and Ukrainian Lieutenant General Levgen Moisuk attend the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

LtoR, U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley, U.S. Defense Secretary Lloyd Austin, Ukraine's Defence Minister Oleksii Reznikov and Ukrainian Lieutenant General Levgen Moisuk attend the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

General Mark Milley, U.S. Defense Secretary Lloyd Austin attends the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

General Mark Milley, U.S. Defense Secretary Lloyd Austin attends the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

General Mark Milley, U.S. Defense Secretary Lloyd Austin speaks during the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

General Mark Milley, U.S. Defense Secretary Lloyd Austin speaks during the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

NATO Secretary General Jens Stoltenberg (L), From 2ndL, U.S. Assistant Secretary of Defense for International Security Affairs Celeste A. Wallander, U.S. Chairman of the Joint Chiefs of Staff, General Mark Milley, U.S. Defense Secretary Lloyd Austin, Ukraine's Defence Minister Oleksii Reznikov, Ukrainian Lieutenant General Levgen Moisuk and other officials attend the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, Belgium June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

U.S. Defense Secretary Lloyd Austin speaks next to Ukraine's Defence Minister Oleksii Reznikov during the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, Belgium June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)

General Mark Milley, U.S. Defense Secretary Lloyd Austin attends the Ukraine Defence Contact group meeting ahead of a NATO defence ministers' meeting at the alliance's headquarters in Brussels, on June 15, 2022. - Ukraine pleaded with Western governments on June 15, 2022 to decide quickly on sending heavy weapons to shore up its faltering defences, as Russia said it would evacuate civilians from a frontline chemical plant. (Photo by YVES HERMAN / POOL / AFP)