Two issues intertwine when Trump spouts off nuclear weapons without much strategic thought: escalation and credibility, both of which seem to be heading in the wrong direction.
“A lie is a lie, and he’s proven to be the master of lies. But we’re not playing tiddlywinks here,” says John Tierney, a former congressman and the executive director of the Center for Arms Control and Non-Proliferation. “This is serious stuff and an existential threat. His pathology here puts us at great risk.”