I am in New York this week for the U.N. General Assembly. At various events over the last few days, I’ve already had the opportunity to chat with former British Prime Minister Rishi Sunak; Spain’s foreign minister, José Manuel Albares; and Trump’s designee for undersecretary of state for economic growth, energy, and the environment, Jacob Helberg, among many others. Of course, a main topic of discussion was U.S. President Donald Trump’s nearly hourlong U.N. speech on Tuesday morning. Some media outlets have tried to fact-check the speech, but this misses the point. Whether or not climate activists want to “kill...