2. An American college student, Otto Warmbier, held prisoner in North Korea for more than a year, has been evacuated in a coma and is on his way back to the United States.

Mr. Warmbier, 23, was sentenced to 15 years of hard labor for attempting to steal a propaganda poster from a hotel. (Above, Mr. Warmbier apologizing on North Korean state television last year.) Three other American citizens are known to be detained in North Korea.

The release coincided with yet another visit by Dennis Rodman, the ex-N.B.A. star, to Pyongyang. Mr. Rodman, who is apparently friendly with Kim Jong-un, declined to say whether he had spoken about the trip with President Trump.