Brown’s upcoming visit to Beijing will focus on keeping up the COP21 Paris accords momentum Trump wants to radically reverse. California’s aggressive stance on pollution controls and environmental standards will be highlighted. The governor wants to make a lasting difference in the world. [...] California’s interest and right to combat climate change and seek China’s support is understandable and has precedent. But what’s in it for China?

The No. 2 diplomat at the U.S. Embassy in Beijing resigned Monday, telling staff his conscience would not permit him to formally notify the Chinese that the United States is withdrawing from the Paris climate accord. David H. Rank, a career Foreign Service officer of 27 years, had been acting ambassador until former Iowa governor Terry Branstad (R) was confirmed as the new ambassador last month. Rank held a town meeting with embassy employees to explain he had offered his resignation and it had been accepted.

On Monday, at the United Nations climate summit in Paris that has drawn together leaders from most of the countries on Earth, Gates unveiled his plan to create a multibillion-dollar fund to pay for research on clean and renewable energy.