President Donald Trump says his administration is waging a "maximum pressure" campaign to prevent North Korea's "reckless pursuit of nuclear missiles" from threatening the U.S. homeland.
Trump says that threat could be a reality soon. He says past U.S. experience with North Korea shows that "complacency and concessions only invite aggression and provocation."
Trump praised Ji Seong-ho, who attended the State of the Union speech Tuesday night. Ji was born in North Korea and lost limbs in a train accident before defecting to South Korea, where he helps other defectors. Trump says his "great sacrifice is an inspiration to us all."
Trump acknowledged the parents of American college student Otto Warmbier, who died shortly after being released from detention in North Korea.