A main purpose of Mr. Kerry’s travels to China and elsewhere has been to rally support for Mr. Biden’s virtual climate summit of dozens of world leaders next week. Mr. Xi has not yet accepted the invitation, but he will join a similar conference on Friday with President Emmanuel Macron of France and Chancellor Angela Merkel of Germany.
Cooperation between the United States, the worst emitter of greenhouse gases historically, and China, the worst in the world today, could spur greater efforts from other countries. China accounts for 28 percent of the world’s carbon dioxide emissions; the United States, in second place, emits 14 percent of the global total.
To call this issue "complicated" would be a laughable understatement. And thanks to that idiot man-child Trump, it's more complicated than it should be: