Their assessments mirrored one made by Secretary of State Rex Tillerson last week while returning from talks in Asia. Tillerson, who has repeatedly rejected the idea that the United States seeks regime change in Pyongyang, said there is no imminent threat from North Korea and Americans should sleep soundly despite the fierce rhetoric coming from both capitals. On Friday, the day after Tillerson came home, Trump tweeted that the U.S. military was "fully in place, locked and loaded" for an attack on North Korea.