Its worth noting to the usual "we're useless now and if only it was the past" brigade, who, as usual, are out in force here, that the UK has never had any strategic interest in defending against this sort of scenario. I've crawled through a lot of papers on defence planning from 50s -70s and this scenario never once featured in planners assumptions for contingency planning. People seem to be moaning that we don't have the ability to intervene in a situation we've spent roughly 70 years assuming we wouldn't get involved in anyway...