French Environment Minister Barbara Pompili and U.S. special envoy for climate John Kerry met in March. Kerry has been traveling around the world working to reestablish the U.S. as a trustworthy player in international climate diplomacy ahead of a summit in Washington, D.C., this week.

French Environment Minister Barbara Pompili, right, and U.S. special envoy for climate John Kerry attend a press conference Thursday, March 11, 2021 in Paris. John Kerry on Wednesday called on the world’s biggest polluters to make “key decisions” in the coming months that would rein in climate change. Kerry discussed preparations for a U.S.-hosted climate summit Apr. 22-23 that will virtually gather the leader of twenty countries that pump out 81% of the world’s greenhouse gas emissions. (AP Photo/Christophe Ena)