Joe Kent, who led the National Counterterrorism Center and was a top aide to intelligence director Tulsi Gabbard, became the first senior Trump administration official to resign over the war in Iran.
Why it matters: Kent's stinging rebuke — that Trump launched the war under pressure from Israel despite Iran posing "no imminent threat" to the U.S. — underscores the discomfort some in the "America First" camp feel about the war.