Chinese leaders rebuffed attempts by John Kerry, President Biden’s climate envoy, to persuade them to commit to tougher climate action during three days of talks in Beijing, a response that suggested that tensions between the countries are making it difficult to work together on a crisis that threatens the planet.
Mr. Kerry emerged late Wednesday from the lengthy negotiations in Beijing with no new agreements. In fact, the Chinese president, Xi Jinping, insisted in a speech that China would…