So Where Did Trump Get That Idea?

From the Wall Street Journal in January:

Around the same time, Mr. Trump had an idea about how to counter the nuclear threat posed by North Korea, which he got after speaking to Russian President Vladimir Putin: If the U.S. stopped joint military exercises with the South Koreans, it could help moderate Kim Jong Un’s behavior.

Defense Secretary Jim Mattis used an approach that aides say can work: “He says, ‘Your instincts are absolutely correct,’ and then gets him [the president] to do the exact opposite of what his instincts say,” said one person close to the White House. Mr. Trump dropped the idea, although he has ordered aides to give the exercises a low profile, eliminating press releases and briefings about them.

According to reports, the Pentagon did not know Trump would promise to stop the military exercises with South Korea at his summit with Kim this week.