The United States and China have agreed to fight climate change "with the seriousness and urgency that it demands” by stepping up efforts to reduce carbon emissions, a rare demonstration of cooperation amid escalating tensions over a raft of other issues.

The agreement, which included few specific commitments, was announced Saturday night, Washington time, after U.S. President Joe Biden’s climate envoy, John Kerry, visited China for three days of talks in which the negotiators managed not to be sidetracked by those disputes.

"It’s very important for us to try to keep those other things away, because climate is a life-or-death issue in so many different parts of the world,” Kerry said in an interview Sunday morning in Seoul, where he met with South Korean officials to discuss global warming. "What we need to do is prove we can actually get together, sit down and work on some things constructively.”