Activists wearing giant heads of the G7 leaders tussle over a giant COVID-19 vaccine syringe during an action of NGO's on Swanpool Beach in Falmouth, Cornwall, England, Friday, June 11, 2021. Leaders of the G7 begin their first of three days of meetings on Friday in Carbis Bay, in which they will discuss COVID-19, climate, foreign policy and the economy. Depicted from left to right, Japan's Prime Minister Yoshihide Suga, Italy's Prime Minister Mario Draghi, Canadian Prime Minister Justin Trudeau, German Chancellor Angela Merkel, British Prime Minister Boris Johnson, U.S. President Joe Biden and French President Emmanuel Macron. (AP Photo/Kirsty Wigglesworth)

NATO Secretary General Jens Stoltenberg, second left, and U.S President Joe Biden, center, pose with other leaders during a family picture at the NATO headquarters where the 30-nation alliance hopes to reaffirm its unity and discuss increasingly tense relations with China and Russia, as the organization pulls its troops out after 18 years in Afghanistan, Monday June, 14, 2021. (Jacques Witt, Pool via AP)

President Joe Biden and French President Emmanuel Macron visit during a bilateral meeting at the G-7 summit, Saturday, June 12, 2021, in Carbis Bay, England. (AP Photo/Patrick Semansky)

President Joe Biden and other NATO heads of the states and governments pose for a family photo during the NATO summit at the Alliance's headquarters, in Brussels, Belgium, Monday, June 14, 2021. (Kevin Lamarque/Pool via AP)

NATO Secretary General Jens Stoltenberg, second left, and U.S President Joe Biden, center, pose with other leaders during a family picture at the NATO headquarters where the 30-nation alliance hopes to reaffirm its unity and discuss increasingly tense relations with China and Russia, as the organization pulls its troops out after 18 years in Afghanistan, Monday June, 14, 2021. (Jacques Witt, Pool via AP)

Leaders of the G7 pose for a group photo on overlooking the beach at the Carbis Bay Hotel in Carbis Bay, St. Ives, Cornwall, England, Friday, June 11, 2021. Leaders from left, Canadian Prime Minister Justin Trudeau, European Council President Charles Michel, U.S. President Joe Biden, Japan's Prime Minister Yoshihide Suga, British Prime Minister Boris Johnson, Italy's Prime Minister Mario Draghi, French President Emmanuel Macron, European Commission President Ursula von der Leyen and German Chancellor Angela Merkel. (AP Photo/Patrick Semansky, Pool)

U.S. President Joe Biden, right, speaks with French President Emmanuel Macron during a plenary session during a NATO summit at NATO headquarters in Brussels, Monday, June 14, 2021. U.S. President Joe Biden is taking part in his first NATO summit, where the 30-nation alliance hopes to reaffirm its unity and discuss increasingly tense relations with China and Russia, as the organization pulls its troops out after 18 years in Afghanistan. (Brendan Smialowski, Pool via AP)