• North Korea’s nuclear program and repeated missile tests will be a major focal point as world leaders gather in New York this week for the U.N. General Assembly.

President Trump, who appeared to refer to the North’s leader, Kim Jong-un, as “Rocket Man” in a tweet, delivers his centerpiece speech to the assembly on Tuesday. He has lunch on Thursday with President Moon Jae-in of South Korea and Prime Minister Shinzo Abe of Japan, who, in an Op-Ed, argues for stronger enforcement of the sanctions against the North.

Our reporters note U.S. intelligence is trying to determine if ingredients for the unusually powerful fuel the North used in its latest launch may be flowing into the country from China and Russia.