U.S. Special Presidential Envoy for Climate John Kerry speaks alongside UAE Special Envoy for Climate Change and Abu Dhabi National Oil Company CEO, Sultan Ahmed Al Jaber, during a visit to Jubail Mangrove Park, in Abu Dhabi, United Arab Emirates April 3, 2021. WAM/Handout via REUTERS.

U.S. Special Presidential Envoy for Climate John Kerry speaks during a visit to Jubail Mangrove Park in Abu Dhabi, United Arab Emirates April 3, 2021. WAM/Handout via REUTERS

U.S. Special Presidential Envoy for Climate John Kerry stands with UAE Special Envoy for Climate Change and Abu Dhabi National Oil Company CEO, Sultan Ahmed Al Jaber, during a visit to Jubail Mangrove Park, in Abu Dhabi, United Arab Emirates April 3, 2021.

U.S. Special Presidential Envoy for Climate John Kerry speaks alongside UAE Special Envoy for Climate Change and Abu Dhabi National Oil Company CEO, Sultan Ahmed Al Jaber, during a visit to Jubail Mangrove Park, in Abu Dhabi, United Arab Emirates April 3, 2021. WAM/Handout via REUTERS.

UAE Special Envoy for Climate Change and Abu Dhabi National Oil Company CEO, Sultan Ahmed Al Jaber, speaks alongside U.S. Special Presidential Envoy for Climate John Kerry during a visit to Jubail Mangrove Park, in Abu Dhabi, United Arab Emirates April 3, 2021. WAM/Handout via REUTERS.

U.S. Special Presidential Envoy for Climate John Kerry poses alongside UAE Special Envoy for Climate Change and Abu Dhabi National Oil Company CEO, Sultan Ahmed Al Jaber, during a visit to Jubail Mangrove Park, in Abu Dhabi, United Arab Emirates April 3, 2021. WAM/Handout via REUTERS