Bernie Gunther said:
Just suppose for a moment that it does. That the majority of the population rises up with serious Iranian assistance (right now the insurgency is a few thousand Sunnis), supply lines are cut and the US/UK forces have to split.
The US forces can presumably try to get out North via Kurdistan and Turkey.
What do the UK forces do? Their area is where the supply lines run, so it'd be the main focus of any such uprising. I wouldn't want them to be counting on the USAF to pick them up, or resupply them. So which way do they get out? Remember, there's only about a brigade's worth of them, and a hell of a lot more Iraqis.
kuwait isn't far, 7,000 isn't a massive number and the force is pretty 'mechanized', so the the actual logs of getting 7,000 people an hours drive away aren't insumountable. saying that however the force is basicly an infantry/logistics force with some armour bolted on. its good at holding ground, but it isn't great at fending off tanks, defending itself against air attack or moving quickly and comletely from A to B.
what might happen when they get to Kuwait is perhaps another issue. in sealift terms (even opposed sealift) the RN is pretty well off, but in airlift terms we'd be fucked.
theres still Tornado GR4's in the gulf, not many, but re-inforcing them wouldn't take too long and those there should be able to frighten the shit out of any
regular Iranian incursion, perhaps giving enough breathing space to the Brigade around Basra to enable it to get out.
perhaps the scenario of Iranian massively agitated civpop, plus Iranian Army incursion aimed at encircling BRITFOR and taking them prisoner - sans curries, cheap suits and board games, but with lots of beheadings and casual executions - might well take the BG, particularly without much in the way of capability to defend them or get them out in good order, down the road of the bucket of instant sunshine.
vital national interests and all that....