NATO Secretary General Jens Stoltenberg (L, front) and U.S. President Joe Biden (R, front) attend a group photo session during an extraordinary NATO leaders' summit at the NATO headquarters in Brussels, Belgium, March 24, 2022. An extraordinary NATO leaders' summit to discuss the ongoing Russia-Ukraine conflict is held at the NATO headquarters in Brussels of Belgium on Thursday. (Xinhua/Zheng Huansong)

French President Emmanuel Macron shakes hands with U.S. President Joe Biden during a group photo session of an extraordinary NATO leaders' summit at the NATO headquarters in Brussels, Belgium, March 24, 2022. An extraordinary NATO leaders' summit to discuss the ongoing Russia-Ukraine conflict is held at the NATO headquarters in Brussels of Belgium on Thursday. (Xinhua/Zheng Huansong)

Luxembourg Prime Minister Xavier Bettel (L) and Canadian Prime Minister Justin Trudeau attend a group photo session during an extraordinary NATO leaders' summit at the NATO headquarters in Brussels, Belgium, March 24, 2022. An extraordinary NATO leaders' summit to discuss the ongoing Russia-Ukraine conflict is held at the NATO headquarters in Brussels of Belgium on Thursday. (Xinhua/Zheng Huansong)

Dutch Prime Minister Mark Rutte (L, back), North Macedonia's Prime Minister Dimitar Kovachevski (C) , Montenegrin President Milo Djukanovic (R, back), Canadian Prime Minister Justin Trudeau (L, front) and Croatian President Zoran Milanovic (R, front) attend a group photo session during an extraordinary NATO leaders' summit at the NATO headquarters in Brussels, Belgium, March 24, 2022. An extraordinary NATO leaders' summit to discuss the ongoing Russia-Ukraine conflict is held at the NATO headquarters in Brussels of Belgium on Thursday. (Xinhua/Zheng Huansong)

Leaders pose for a group photo during a NATO extraordinary summit at the NATO headquarters in Brussels, Belgium, March 24, 2022. An extraordinary NATO leaders' summit to discuss the ongoing Russia-Ukraine conflict is held at the NATO headquarters in Brussels of Belgium on Thursday. (Xinhua/Zheng Huansong)

French President Emmanuel Macron (1st L), NATO Secretary General Jens Stoltenberg (2nd L) and Turkish President Recep Tayyip Erdogan (3rd L) attend a group photo session during an extraordinary NATO leaders' summit at the NATO headquarters in Brussels, Belgium, March 24, 2022. An extraordinary NATO leaders' summit to discuss the ongoing Russia-Ukraine conflict is held at the NATO headquarters in Brussels of Belgium on Thursday. (Xinhua/Zheng Huansong)