Ukrainian filmmaker Oleg Sentsov hugs his daughter upon his arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Ukrainian filmmaker Oleg Sentsov hugs his daughter upon his arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Relatives of Ukrainian prisoners freed by Russia greet them upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Relatives of Ukrainian prisoners freed by Russia greet them upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Ukraine's President Volodymyr Zelenskiy, right, greets Ukrainian prisoners upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Ukraine's President Volodymyr Zelenskiy, right, greets Ukrainian prisoners upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Ukraine's President Volodymyr Zelenskiy, right, greets Ukrainian prisoners upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Relatives of Ukrainian prisoners freed by Russia greet them upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Relatives of Ukrainian prisoners freed by Russia greet them upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky), APTOPIX

Relatives of Ukrainian prisoners freed by Russia greet them upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Ukraine's President Volodymyr Zelenskiy, right, greets Ukrainian prisoners upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Ukrainian filmmaker Oleg Sentsov hugs his daughter upon his arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Relatives of Ukrainian prisoners freed by Russia greet them upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Relatives of Ukrainian prisoners freed by Russia greet them upon their arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (AP Photo/Efrem Lukatsky)

Prisoners aboard a plane on the way to Ukraine travelling to Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (Ukrainian Presidential Press Office via AP)

Ukraine's President Volodymyr Zelenskiy, right, greets Ukrainian prisoner filmmaker Oleg Sentsov upon his arrival at Boryspil airport, outside Kyiv, Ukraine, Saturday, Sept. 7, 2019. Planes carrying prisoners freed by Russia and Ukraine have landed in the countries' capitals, in an exchange that could be a significant step toward improving relations between Moscow and Kyiv. The planes, each reportedly carrying 35 prisoners, landed almost simultaneously at Vnukovo airport in Moscow and at Kyiv's Boryspil airport. (Ukrainian Presidential Press Office via AP)

A police convoy escort two buses with tinted windows leaving the Vnukovo-2 goverment airport outside Moscow on September 7, 2019 as a long-awaited exchange of prisoners between Moscow and Kiev has begun today, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Planes carrying 70 Russian and Ukrainian prisoners involved in a landmark exchange landed on September 7, 2019 in Moscow and Kiev, with the Ukrainian leader personally greeting former inmates. (Photo by Vasily MAXIMOV / AFP)

Ukrainian film director Oleg Sentsov (R) hugs his daughter Alina Sentsova after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Ukrainian film director Oleg Sentsov (R) hugs his daughter Alina Sentsova after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Ukrainian film director Oleg Sentsov (R) hugs his daughter Alina Sentsova after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Ukrainian film director Oleg Sentsov (R) hugs his daughter Alina Sentsova (C) after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Ukrainian film director Oleg Sentsov (R) and his daughter Alina Sentsova talks to the press after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Ukrainian film director Oleg Sentsov (C) hugs his daughter Alina Sentsova after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky hailed a prisoner exchange with Russia, on September 7, 2019, as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Reporters surround Ukrainian film director Oleg Sentsov (R) as he hugs his daughter Alina Sentsova (C) after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky hailed a prisoner exchange with Russia, on September 7, 2019, as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Reporters surround Ukrainian film director Oleg Sentsov (R) as he hugs his daughter Alina Sentsova (2R) after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky hailed a prisoner exchange with Russia, on September 7, 2019, as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

A former prisoner is helped by a medical worker after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

A former prisoner hugs relatives after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Ukraine's President Volodymyr Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

A former prisoner hugs relatives after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Ukraine's President Volodymyr Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

A former prisoner hugs relatives after he disembarked from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Ukraine's President Volodymyr Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Friends and relatives waves as a plane carrying former prisoners lands on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Ukraine's President Volodymyr Zelensky on September 7, 2019 hailed a prisoner exchange with Russia as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Sergei SUPINSKY / AFP)

Ukrainian film director Oleg Sentsov disembarks from a plane on September 7, 2019 at Boryspil international airport in Kiev after a long-awaited exchange of prisoners between Moscow and Kiev, a day after Russian President said for the first time the "large-scale" prisoner exchange with Ukraine was being finalised. - Ukraine's President Volodymyr Zelensky hailed a prisoner exchange with Russia, on September 7, 2019, as the first step towards ending the war in Ukraine's east and returning territory annexed by Moscow. (Photo by Anatolii STEPANOV / AFP)

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian President Volodymyr Zelensky speaks to press after recently exchanged Ukrainian prisoners who jailed in Russia arrive at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: A plane carrying recently exchanged Ukrainian prisoners who jailed in Russia arrives at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives wait the arrival of a plane carrying recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian President Volodymyr Zelensky welcomes recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian President Volodymyr Zelensky welcomes recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives meet recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives meet recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives meet recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives meet recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian director Oleg Sentsov meet his relatives as recently exchanged Ukrainian prisoners who jailed arrive at Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian director Oleg Sentsov meet his relatives as recently exchanged Ukrainian prisoners who jailed arrive at Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian director Oleg Sentsov meet his relatives as recently exchanged Ukrainian prisoners who jailed arrive at Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian director Oleg Sentsov meet his relatives as recently exchanged Ukrainian prisoners who jailed arrive at Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian director Oleg Sentsov meet his relatives as recently exchanged Ukrainian prisoners who jailed arrive at Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Ukrainian director Oleg Sentsov meet his relatives as recently exchanged Ukrainian prisoners who jailed arrive at Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives meet recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives meet recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives meet recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - SEPTEMBER 07: Relatives meet recently exchanged Ukrainian prisoners who jailed in Russia at Boryspil International Airport in Kiev, Ukraine on September 07, 2019. Russia and Ukraine exchanged 70 prisoners after intense negotiations. Thirty-five people from each side, including 24 Ukrainian sailors who were detained in the incident near the Sea of Azov last November by Russia, and Russian journalist Kirill Vyshinsky convicted of espionage, were freed. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM