Estonia's Prime Minister Kaja Kallas, U.S. President Joe Biden, France's President Emmanuel Macron and British Prime Minister Boris Johnson stand next to each other during a family photo before a NATO summit to discuss Russia's invasion of Ukraine at the alliance's headquarters in Brussels, Belgium, March 24, 2022. REUTERS/Wolfgang Rattay TPX IMAGES OF THE DAY 

U.S. President Joe Biden talks with British Prime Minister Boris Johnson next to French President Emmanuel Macron as they begin the meeting of G7 Leaders at NATO Headquarters in Brussels, Belgium, March 24, 2022. Doug Mills/Pool via REUTERS 

Canada's Prime Minister Justin Trudeau, U.S. President Joe Biden, German Chancellor Olaf Scholz, Britain's Prime Minister Boris Johnson and France's President Emmanuel Macron pose for a family photo during the G7 summit in Brussels, Belgium, March 24, 2022. Michael Kappeler /Pool via REUTERS 

German Chancellor Olaf Scholz and US President Joe Biden meet ahead of a G7 summit in Brussels, March 24, 2022. Michael Kappeler /Pool via REUTERS 

German Chancellor Olaf Scholz and US President Joe Biden meet ahead of a G7 summit in Brussels, March 24, 2022. Michael Kappeler /Pool via REUTERS 

German Chancellor Olaf Scholz and US President Joe Biden meet ahead of a G7 summit in Brussels, March 24, 2022. Michael Kappeler /Pool via REUTERS 

U.S. President Joe Biden, Germany's Chancellor Olaf Scholz and British Prime Minister Boris Johnson pose for a G7 leaders' family photo during a NATO summit on Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium March 24, 2022. REUTERS/Henry Nicholls/Pool 

NATO Secretary General Jens Stoltenberg, President of the European Commission Ursula von der Leyen, Japan's Prime Minister Fumio Kishida, Canada's Prime Minister Justin Trudeau, US President Joe Biden, German Chancellor Olaf Scholz, Britain's Prime Minister Boris Johnson, France's President Emmanuel Macron, Italy's Prime Minister Mario Draghi and European Council President Charles Michel pose for a family photo during the G7 summit in Brussels, Belgium, March 24, 2022. Michael Kappeler /Pool via REUTERS 

Japan's Prime Minister Fumio Kishida, Canada's Prime Minister Justin Trudeau, U.S. President Joe Biden, Germany's Chancellor Olaf Scholz, British Prime Minister Boris Johnson, France's President Emmanuel Macron and Italy's Prime Minister Mario Draghi pose for a G7 leaders' family photo during a NATO summit on Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium March 24, 2022. REUTERS/Henry Nicholls/Pool 

U.S. President Joe Biden attends a G7 leaders meeting during a NATO summit on Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium March 24, 2022. REUTERS/Henry Nicholls/Pool 

US President Joe Biden attends the G7 summit in Brussels , March 24, 2022. Thomas Coex /Pool via REUTERS 

Canada's Prime Minister Justin Trudeau, U.S. President Joe Biden and Germany's Chancellor Olaf Scholz pose for a G7 leaders' family photo during a NATO summit on Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium March 24, 2022. REUTERS/Henry Nicholls/Pool 

U.S. President Joe Biden talks with German Chancellor Olaf Scholz and Japanese Prime Minister Fumio Kishida during a family photo with G7 leaders at NATO Headquarters in Brussels, Belgium, March 24, 2022. Doug Mills/Pool via REUTERS 

U.S. President Joe Biden talks with German Chancellor Olaf Scholz and Japanese Prime Minister Fumio Kishida during a family photo with G7 leaders at NATO Headquarters in Brussels, Belgium, March 24, 2022. Doug Mills/Pool via REUTERS 

Japan's Prime Minister Fumio Kishida, Canada's Prime Minister Justin Trudeau, U.S. President Joe Biden, Germany's Chancellor Olaf Scholz, British Prime Minister Boris Johnson and France's President Emmanuel Macron pose for a G7 leaders' family photo during a NATO summit on Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium March 24, 2022. REUTERS/Henry Nicholls/Pool 

Canada's Prime Minister Justin Trudeau, US President Joe Biden, German Chancellor Olaf Scholz pose during the G7 summit in Brussels, Belgium, March 24, 2022. Thomas Coex /Pool via REUTERS 

U.S. President Joe Biden talks to France's President Emmanuel Macron during a NATO summit to discuss Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium, March 24, 2022. Michael Kappeler/Pool via REUTERS 

Belgium's Prime Minister Alexander De Croo, NATO Secretary General Jens Stoltenberg, US President Joe Biden, Italy's Prime Minister Mario Draghi, France's President Emmanuel Macron, and others wait for a family photograph before an extraordinary summit at NATO Headquarters in Brussels , Belgium, March 24, 2022. Brendan Smialowski/ Pool via REUTERS 

US President Joe Biden talks with France's President Emmanuel Macron and Britain's Prime Minister Boris Johnson ahead of an extraordinary summit at NATO Headquarters in Brussels, Belgium, March 24, 2022. Brendan Smialowski/ Pool via REUTERS 

US President Joe Biden talks with France's President Emmanuel Macron and Britain's Prime Minister Boris Johnson ahead of an extraordinary summit at NATO Headquarters in Brussels, Belgium, March 24, 2022. Brendan Smialowski/ Pool via REUTERS 

France's President Emmanuel Macron gestures next to U.S. President Joe Biden during a NATO summit to discuss Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium, March 24, 2022. REUTERS/Gonzalo Fuentes TPX IMAGES OF THE DAY 

U.S. President Joe Biden talks to France's President Emmanuel Macron during a NATO summit to discuss Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium, March 24, 2022. REUTERS/Gonzalo Fuentes 

U.S. President Joe Biden attends a North Atlantic Council meeting along with U.S. Secretary of State Antony Blinken and U.S. Defense Secretary Lloyd Austin, who are sitting in the background, during a NATO summit to discuss Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium March 24, 2022. REUTERS/Evelyn Hockstein/Pool 

U.S. President Joe Biden speaks with Romania's President Klaus Iohannis as NATO Secretary General Jens Stoltenberg stands next to them while they attend a North Atlantic Council meeting during a NATO summit to discuss Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium March 24, 2022. REUTERS/Evelyn Hockstein/Pool 

U.S. President Joe Biden, France's President Emmanuel Macron and British Prime Minister Boris Johnson speak during a family photo opportunity before a NATO summit to discuss Russia's invasion of Ukraine at the alliance's headquarters in Brussels, Belgium, March 24, 2022. REUTERS/Wolfgang Rattay 

U.S. President Joe Biden attends a North Atlantic Council meeting during a NATO summit to discuss Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium March 24, 2022. REUTERS/Evelyn Hockstein/Pool 

U.S. President Joe Biden shakes hands with Turkey's Defence Minister Hulusi Akar, British Prime Minister Boris Johnson ahead of a NATO summit to discuss Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium, March 24, 2022. REUTERS/Gonzalo Fuentes 

Turkey's President Recep Tayyip Erdogan stands as France's President Emmanuel Macron shakes hands with US President Joe Biden as they arrive at NATO Headquarters in Brussels, Belgium, March 24, 2022. Brendan Smialowski/ Pool via REUTERS 

Britain's Prime Minister Boris Johnson, France's President Emmanuel Macron and US President Joe Biden talk as they arrive at NATO Headquarters in Brussels, Belgium, March 24, 2022. Brendan Smialowski/ Pool via REUTERS 

Britain's Prime Minister Boris Johnson, France's President Emmanuel Macron and US President Joe Biden talk as they arrive at NATO Headquarters in Brussels, Belgium, March 24, 2022. Brendan Smialowski/ Pool via REUTERS 

U.S. President Joe Biden speaks with France's President Emmanuel Macron ahead the of a NATO summit to discuss Russia's invasion of Ukraine, at the alliance's headquarters in Brussels, Belgium, March 24, 2022. REUTERS/Gonzalo Fuentes 

U.S. President Joe Biden, France's President Emmanuel Macron and British Prime Minister Boris Johnson speak before a NATO summit to discuss Russia's invasion of Ukraine at the alliance's headquarters in Brussels, Belgium, March 24, 2022. REUTERS/Wolfgang Rattay 

Britain's Prime Minister Boris Johnson, France's President Emmanuel Macron and US President Joe Biden talk as they arrive at NATO Headquarters in Brussels, Belgium, March 24, 2022. Brendan Smialowski/ Pool via REUTERS