Britain's Foreign Secretary Dominic Raab, right, and US Secretary of State Antony Blinken attend a joint press conference at Downing Street in London, Monday, May 3, 2021, during the G7 foreign ministers meeting. (Ben Stansall/Pool Photo via AP)

Britain's Foreign Secretary Dominic Raab, right, walks with Japan's Foreign Minister Toshimitsu Motegi, centre, during their talks in Kent, southern England, Monday May 3, 2021. (Tom Nicholson/Pool via AP)

United States Secretary of State Antony Blinken, left, wearing a face mask to curb the spread of coronavirus, speaks to South Korea's Foreign Minister Chung Eui-yong, right, during bilateral talks on the sidelines of a G7 foreign ministers meeting, at the Grosvenor House Hotel, London, Monday, May 3, 2021. (Ben Stansall/Pool Photo via AP)

US Secretary of State Antony Blinken speaks during a joint press conference with Britain's Foreign Secretary Dominic Raab, not pictured, at Downing Street in London, Monday, May 3, 2021, during the G7 foreign ministers meeting. (Ben Stansall/Pool Photo via AP)

Britain's Foreign Secretary Dominic Raab, right, welcomes U.S. Secretary of State Antony Blinken ahead of bilateral talks as part of the G7 foreign ministers meeting near London, Monday May 3, 2021. Issues related to Iran are set to feature in talks later Monday between U.S. Secretary of State Antony Blinken and his host in London, British Foreign Secretary Dominic Raab. (Ben Stansall / Pool via AP)

United States Secretary of State Antony Blinken, wearing a face mask to curb the spread of COVID-19, sits at a table for during bilateral talks with Japan's Foreign Minister Toshimitsu Motegi on the sidelines of a G7 foreign ministers meeting, at Grosvenor House Hotel, London, Monday, May 3, 2021. (Ben Stansall/Pool Photo via AP)

United States Secretary of State Antony Blinken, second left, wearing a face mask to curb the spread of coronavirus, speaks to South Korea's Foreign Minister Chung Eui-yong, third right, during bilateral talks on the sidelines of a G7 foreign ministers meeting, at the Grosvenor House Hotel, London, Monday, May 3, 2021. (Ben Stansall/Pool Photo via AP)

United States Secretary of State Antony Blinken, wearing a face mask to curb the spread of coronavirus, speaks to South Korea's Foreign Minister Chung Eui-yong during bilateral talks on the sidelines of a G7 foreign ministers meeting, at Grosvenor House Hotel, London, Monday, May 3, 2021. (Ben Stansall/Pool Photo via AP)

Britain's Foreign Secretary Dominic Raab, left, meets with Japan's Foreign Minister Toshimitsu Motegi, right, accompanied by aides, during their talks in Kent, southern England, Monday May 3, 2021. (Tom Nicholson/Pool via AP)

Britain's Foreign Secretary Dominic Raab, right, walks with Japan's Foreign Minister Toshimitsu Motegi during their talks in Kent, southern England, Monday May 3, 2021. (Tom Nicholson/Pool via AP)

Britain's Foreign Secretary Dominic Raab, right, and US Secretary of State Antony Blinken attend a joint press conference at Downing Street in London, Monday, May 3, 2021, during the G7 foreign ministers meeting. (Ben Stansall/Pool Photo via AP)

Britain's Foreign Secretary Dominic Raab, right, walks with Japan's Foreign Minister Toshimitsu Motegi, centre, during their talks in Kent, southern England, Monday May 3, 2021. (Tom Nicholson/Pool via AP)

Britain's Foreign Secretary Dominic Raab, right, and US Secretary of State Antony Blinken attend a joint press conference at Downing Street in London, Monday, May 3, 2021, during the G7 foreign ministers meeting. (Ben Stansall/Pool Photo via AP)

Britain's Foreign Secretary Dominic Raab, left, poses for a photo with U.S. Secretary of State Antony Blinken ahead of bilateral talks as part of the G7 foreign ministers meeting near London, Monday May 3, 2021. Issues related to Iran are set to feature in talks later Monday between U.S. Secretary of State Antony Blinken and his host in London, British Foreign Secretary Dominic Raab. (Ben Stansall / Pool via AP)

Japan's Foreign Minister Toshimitsu Motegi, wearing a face mask to curb the spread of COVID-19, sits at a table during bilateral talks with United States Secretary of State Antony Blinken, on the sidelines of a G7 foreign ministers meeting, at Grosvenor House Hotel, London, Monday, May 3, 2021. (Ben Stansall/Pool Photo via AP)