Trump vs. the U.N.: “Your countries are going to hell”President Trump lectured world leaders at the United Nations for nearly an hour yesterday, bashing allies and foes, airing grievances, and questioning whether the U.N. should even exist. “I’m really good at this stuff,” Trump said. “Your countries are going to hell.”In a speech that went almost four times as long as his allotted time, the president warned the assembled leaders about immigration and green energy, which he said were “destroying a large part of the free world.”He spent nearly a quarter of his speaking time attacking efforts to address climate change, which he described as “the greatest con job in history.” In January, Trump withdrew the U.S. from the Paris Agreement, aimed at reducing greenhouse gas emissions, for the second time. Trump repeated his claim that he had ended wars around the world. “Sadly, in all cases, the United Nations did not even try to help in any of them,” he said.