John Kerry, United States Special Presidential Envoy for Climate speakers during an interview with The Associated Press during the World Economic Forum in Davos, Switzerland, Tuesday, May 24, 2022. The annual meeting of the World Economic Forum is taking place in Davos from May 22 until May 26, 2022. (AP Photo/Markus Schreiber)

Jens Stoltenberg, Secretary-General, North Atlantic Treaty Organization, NATO, speaks during the World Economic Forum in Davos, Switzerland, Tuesday, May 24, 2022. The annual meeting of the World Economic Forum is taking place in Davos from May 22 until May 26, 2022. (AP Photo/Markus Schreiber)

John F. Kerry, Special Presidential Envoy for Climate of the United States, left, gestures besides Xie Zhenhua, Special Envoy for Climate Change of the People's Republic of China, during the World Economic Forum in Davos, Switzerland, Tuesday, May 24, 2022. The annual meeting of the World Economic Forum is taking place in Davos from May 22 until May 26, 2022. (AP Photo/Markus Schreiber)

Ursula von der Leyen, President of the European Commission speaks at the World Economic Forum in Davos, Switzerland, Tuesday, May 24, 2022. The annual meeting of the World Economic Forum is taking place in Davos from May 22 until May 26, 2022. (AP Photo/Markus Schreiber)

John F. Kerry, Special Presidential Envoy for Climate of the United States, speaks during a news conference at the World Economic Forum in Davos, Switzerland, Tuesday, May 24, 2022. The annual meeting of the World Economic Forum is taking place in Davos from May 22 until May 26, 2022. (AP Photo/Markus Schreiber)