Helicopter with Iranian President and Foreign Minister down

[Zaphod58]

 

Because this has the potential to become something bigger.  If the Ayatollah decides to claim this was Israel or the US, or if the IRGC is getting froggy and trying to seize control from someone, or whatever, Biden needs a briefing on what's going on, and the military needs to lay out options for responses or what Iran might do.  It's SOP to brief the President on things going on when something big happens.  Even through the President of Iran is largely a figurehead, this is still pretty big.