Responding to a Russian diplomat’s warning that any American missiles fired at Syria would be “downed,” President Donald Trump told Russia to “get ready” in a tweet Wednesday morning because missiles “will be coming”—a threat commentators characterized as an extraordinarily dangerous escalation of tensions between two nuclear powers.

Responding to Trump’s tweet, The Intercept‘s Glenn Greenwald observed Wednesday that the president’s threat provides a “nice, chilling reminder of how dangerous and volatile confrontation with Russia can be” and demonstrates “why those who have been demanding Trump be more belligerent are dangerous idiots.”

SCROLL TO CONTINUE WITH CONTENT