KRT via AP Video/AP North Korea and the US backslid from previously rosy relations on Tuesday when media from Pyongyang attacked President Donald Trump's national security adviser John Bolton. North Korea took issue with Bolton calling for a "Libya model" of denuclearization, as Libya's leader met with a violent death after disarming. Bolton almost certainly knew what he was doing, and experts say he may be sabotaging the deal. Bolton has written extensively to advocate for the US bombing North Korea.