“I’m really good at this stuff,” Mr Trump said. “Immigration and their suicidal energy ideas will be the death of Western Europe,” Mr Trump said. At a NATO summit in June, Mr Trump and European leaders lavished each other with praise. But in Tuesday’s speech, Mr Trump mocked NATO allies for not shutting down purchases of Russian oil and said he would impose strong economic measures against Moscow. Mr Trump, asked by reporters if NATO countries should shoot down Russian aircraft if they enter their airspace, said, “Yes, I do.”Donald Trump meets with Volodymyr Zelensky at the 80th session of the UN’s General Assembly.