Japanese Prime Minister Yoshihide Suga attends a plenary session, during the G7 summit in Carbis Bay, England, Sunday June 13, 2021. (Phil Noble/Pool via AP)

Climate activists swim in their costumes during a demonstration on a beach outside the G7 meeting in St. Ives, Cornwall, England, Sunday, June 13, 2021. Leaders of the G7 wrap up three days of meetings in Carbis Bay Sunday, in which they discussed such topics as COVID-19, climate, foreign policy and the economy. (AP Photo/Jon Super)

German Chancellor Angela Merkel attends a plenary session during the G7 summit in Carbis Bay, England, Sunday June 13, 2021. (Phil Noble/Pool via AP)

A giant banner from Extinction Rebellion is placed on a seawall outside the G7 meeting in St. Ives, Cornwall, England, Sunday, June 13, 2021. Leaders of the G7 wrap up three days of meetings in Carbis Bay Sunday, in which they discussed such topics as COVID-19, climate, foreign policy and the economy. (AP Photo/Jon Super)

Britain's Prime Minister Boris Johnson gestures, during a press conference on the final day of the G7 summit in Carbis Bay, Cornwall, England, Sunday June 13, 2021. (Ben Stansall/Pool Photo 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)

A small girl watches as climate activists demonstrate in costume on a beach outside the G7 meeting in St. Ives, Cornwall, England, Sunday, June 13, 2021. Leaders of the G7 wrap up three days of meetings in Carbis Bay Sunday, in which they discussed such topics as COVID-19, climate, foreign policy and the economy. (AP Photo/Jon Super)

A metal sculpture by artist Ruscoe, which depicts a sinking man, sits amidst sunbathers on a beach outside the G7 meeting in St. Ives, Cornwall, England, Sunday, June 13, 2021. Leaders of the G7 wrap up three days of meetings in Carbis Bay Sunday, in which they discussed such topics as COVID-19, climate, foreign policy and the economy. (AP Photo/Jon Super)

Protestors wearing giant heads portraying G7 leaders participate in a demonstration on a beach outside the G7 meeting in St. Ives, Cornwall, England, Sunday, June 13, 2021. Leaders of the G7 wrap up three days of meetings in Carbis Bay Sunday, in which they discussed such topics as COVID-19, climate, foreign policy and the economy. Leaders portrayed from left, U.S. President Joe Biden, Japan's Prime Minister Yoshihide Suga, British Prime Minister Boris Johnson and German Chancellor Angela Merkel. (AP Photo/Jon Super)

Canadian Prime Minister Justin Trudeau attends a plenary session during the G7 summit in Carbis Bay, southern England, Sunday June 13, 2021. (Phil Noble/Pool via AP)

Protestors take part in a die-in during a demonstration on a beach outside the G7 meeting in St. Ives, Cornwall, England, Sunday, June 13, 2021. Leaders of the G7 wrap up three days of meetings in Carbis Bay Sunday, in which they discussed such topics as COVID-19, climate, foreign policy and the economy. (AP Photo/Jon Super)

President Joe Biden walks with national security adviser Jake Sullivan, right, and members of the Secret Service as he arrives for the final session of the G-7 summit in Carbis Bay, England, Sunday, June 13, 2021. (Doug Mills/The New York Times via AP, Pool)

Britain's Prime Minister Boris Johnson, left, and U.S. President Joe Biden attend a plenary session, during the G7 summit in Carbis Bay, England, Sunday June 13, 2021. (Phil Noble/Pool via AP)

President Joe Biden departs after speaking at a news conference after attending the G-7 summit, Sunday, June 13, 2021, at Cornwall Airport in Newquay, England. Biden is en route to Windsor, England, to meet with Queen Elizabeth II, and then on to Brussels to attend the NATO summit. (AP Photo/Patrick Semansky)

President Joe Biden talks with French President Emmanuel Macron during the final session of the G-7 summit in Carbis Bay, England, Sunday, June 13, 2021. (Doug Mills/The New York Times via AP, Pool)