Think about it: the Argentineans have just launched an armed assault on and occupied and begun to dismantle a USAF base.
Funny how some folks either can't realize that or wish it can just be waved away.
I'm not going to pretend I know what was being discussed at the highest levels of the US political and diplomatic establishment during the period. I do know, however, what was believed in the military: We thought we were going in.
At the time, I was serving aboard a cruiser being overhauled in the now-shuttered Charleston Naval Shipyard. That ship was normally stationed in Mayport as part of the USS
Forrestal battlegroup. When the war began work on the ship increased in pace, leaves and school assignments were canceled, and other steps taken because it was understood that the
Forrestal was going to the South Atlantic. This wasn't just mess decks scuttlebutt, the command of the yard directed that pace of repairs increase and the command of the ship took steps to keep the crew on hand. That meant those commanding officers either "knew" or "believed" or "guessed" the ship would be needed.
We all "knew" we were going in and we acted accordingly. An Argentine attack on the USAF base on Ascension would have seen US forces already preparing to intervene.