Could the Brits rely upon the Obama Administration to be as friendly as was the Reagan Administration?
The Reagan administration nearly screwed-up the 1982 war:
How the U.S. Almost Betrayed Britain in the Falklands War - WSJ.com
If they did effect a sizable landing but not go after the British Forces in totality, ignored the Airfield....but maintained a well defended enclave....would it force the Brits to make parley.....or make War again?
How are the Argies going to do that without air cover?
The last intel I read stated that this might be done by a cruise liner from Brazil on which Argie troops will have boarded and simply walk off at Port Stanley. The same memo (which was not top secret) said that the Argies would be more likely to try a ground assault where there integrated with the Port Stanley population making a counter ground assault by the UK the only solution. As the Argies believe that the UK will never again send another task force they could be onto a plausible strategy.