“The North Koreans do not take criticism well,” said Jean H. Lee, an analyst at the Wilson Center and a former reporter who opened an Associated Press bureau in Pyongyang in 2012. “They are very sensitive to an assault on their way of life and their political system and their penal code. I suspect there may be some reluctance to bring up the issue of defectors and showcase them in a way that Trump did last year, to avoid angering the North Koreans.”