German Chancellor Angela Merkel arrives at an official welcome at the G7 summit in Carbis Bay, Cornwall, England, Saturday, June 12, 2021. (Leon Neal/Pool Photo via AP)

Britain's Prime Minister Boris Johnson, left, and US President Joe Biden during the G7 summit in Cornwall, England, Saturday June 12, 2021. (Leon Neal/Pool via AP)

Climate Protestors march in potato sacks with signs during a demonstration in Falmouth, Cornwall, England, Saturday, June 12, 2021. Leaders of the G7 gather for a second day of meetings on Saturday, in which they will discuss COVID-19, climate, foreign policy and the economy. (AP Photo/Alastair Grant)

Climate activists from Oxfam, wearing giant heads depicting the leaders of the G7, sit on beach chairs as they participate in an action on Swanpool Beach in Falmouth, Cornwall, England, Saturday, June 12, 2021. Leaders of the G7 gather for a second day of meetings on Saturday, in which they will discuss COVID-19, climate, foreign policy and the economy. Leaders depicted from left, German Chancellor Angela Merkel, U.S. President Joe Biden and British Prime Minister Boris Johnson. (AP Photo/Alastair Grant)

A security boat patrols off the coast of Carbis Bay, England, Saturday, June 12, 2021, as the G-7 summit takes place. (AP Photo/Patrick Semansky)

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)

Britain's Prime Minister Boris Johnson, center, with from left, Italy's Prime Minister Mario Draghi, Australia's Prime Minister Scott Morrison, German Chancellor Angela Merkel, South Africa's President Cyril Ramaphosa, South Korea's President Moon Jae-in, US President Joe Biden, French President Emmanuel Macron, Canada's Prime Minister Justin Trudeau, Japan's Prime Minister Yoshihide Suga and President of the European Council Charles Michel during the G7 summit in Cornwall, England, Saturday June 12, 2021. (Leon Neal/Pool via AP)