CNN's senior conservative commentator Scott Jennings dropped a [curse word] at a 23-year-old progressive YouTuber during a heated on-air clash that quickly went viral, exposing divisions over President Donald Trump's military campaign against Iran. The confrontation began when Adam Mockler challenged the timeline of Trump's conflict with Iran, pointing to Jennings' record as a former George W. Bush administration official who supported past military interventions. Jennings and Mockler appeared on CNN's NewsNight with Abby Phillip on Thursday.