First Lady of Ukraine Olena Zelenska, center, reacts beside First Vice Prime Minister of Ukraine Yulia Svyrydenko, right, at the World Economic Forum in Davos, Switzerland after a helicopter crash in Ukraine, where Minister of Internal Affairs Denys Monastyrsky died among others on Wednesday, Jan. 18, 2023. The annual meeting of the World Economic Forum is taking place in Davos from Jan. 16 until Jan. 20, 2023. (AP Photo/Markus Schreiber)

First Lady of Ukraine Olena Zelenska reacts at the World Economic Forum in Davos, Switzerland after the news of a helicopter crash in Ukraine, where Minister of Internal Affairs Denys Monastyrsky died among others on Wednesday, Jan. 18, 2023. The annual meeting of the World Economic Forum is taking place in Davos from Jan. 16 until Jan. 20, 2023. (AP Photo/Markus Schreiber)

First Lady of Ukraine Olena Zelenska reacts at the World Economic Forum in Davos, Switzerland after the news of a helicopter crash in Ukraine, where Minister of Internal Affairs Denys Monastyrsky died among others on Wednesday, Jan. 18, 2023. The annual meeting of the World Economic Forum is taking place in Davos from Jan. 16 until Jan. 20, 2023. (AP Photo/Markus Schreiber)

First Lady of Ukraine Olena Zelenska reacts at the World Economic Forum in Davos, Switzerland after the news of a helicopter crash in Ukraine, where Minister of Internal Affairs Denys Monastyrsky died among others on Wednesday, Jan. 18, 2023. The annual meeting of the World Economic Forum is taking place in Davos from Jan. 16 until Jan. 20, 2023. (AP Photo/Markus Schreiber)

First Lady of Ukraine Olena Zelenska, left, and First Vice Prime Minister of Ukraine Yulia Svyrydenko, right, reacts at the World Economic Forum in Davos, Switzerland after a helicopter crash in Ukraine, where Minister of Internal Affairs Denys Monastyrsky died among others on Wednesday, Jan. 18, 2023. The annual meeting of the World Economic Forum is taking place in Davos from Jan. 16 until Jan. 20, 2023. (AP Photo/Markus Schreiber)

Olena Zelenska, First Lady of Ukraine reacts during the 53rd annual meeting of the World Economic Forum, WEF, in Davos, Switzerland, Wednesday, Jan. 18, 2023. The meeting brings together entrepreneurs, scientists, corporate and political leaders in Davos under the topic "Cooperation in a Fragmented World" from 16 to 20 January. (Laurent Gillieron)/Keystone via AP)

Ukraine's First Lady Olena Zelenska looks on after the reported death of Ukraine's interior minister as she attends a special dialogue with CEO's meeting at the Congress centre during the World Economic Forum (WEF) annual meeting in Davos, on January 18, 2022. - Sixteen people, including two children and Ukraine's interior minister, were killed when a helicopter crashed near a kindergarten outside the capital Kyiv, officials said on January 18, 2023. (Photo by Fabrice COFFRINI / AFP)

Ukraine's First Lady Olena Zelenska looks on after the reported death of Ukraine's interior minister as she attends a special dialogue with CEO's meeting at the Congress centre during the World Economic Forum (WEF) annual meeting in Davos, on January 18, 2022. - Sixteen people, including two children and Ukraine's interior minister, were killed when a helicopter crashed near a kindergarten outside the capital Kyiv, officials said on January 18, 2023. (Photo by Fabrice COFFRINI / AFP)

Ukraine's First Lady Olena Zelenska looks on after the reported death of Ukraine's interior minister as she attends a special dialogue with CEO's meeting at the Congress centre during the World Economic Forum (WEF) annual meeting in Davos, on January 18, 2022. - Sixteen people, including two children and Ukraine's interior minister, were killed when a helicopter crashed near a kindergarten outside the capital Kyiv, officials said on January 18, 2023. (Photo by Fabrice COFFRINI / AFP)

Ukraine's First Lady Olena Zelenska looks on after the reported death of Ukraine's interior minister as she attends a special dialogue with CEO's meeting at the Congress centre during the World Economic Forum (WEF) annual meeting in Davos, on January 18, 2022. - Sixteen people, including two children and Ukraine's interior minister, were killed when a helicopter crashed near a kindergarten outside the capital Kyiv, officials said on January 18, 2023. (Photo by Fabrice COFFRINI / AFP)

Ukraine's First Lady Olena Zelenska reacts after the reported death of Ukraine's interior minister as she attends a special dialogue with CEO's meeting at the Congress centre during the World Economic Forum (WEF) annual meeting in Davos, on January 18, 2023. - Sixteen people, including two children and Ukraine's interior minister, were killed when a helicopter crashed near a kindergarten outside the capital Kyiv, officials said on January 18, 2023. (Photo by Fabrice COFFRINI / AFP)