He said: "If al-Qaeda and the Taliban believe they have defeated us – what next? Would they stop at Afghanistan? Pakistan is clearly a tempting target not least because of the fact that it is a nuclear-weaponed state and that is a terrifying prospect. Even if only a few of those (nuclear) weapons fell into their hands, believe me they would use them. The recent airlines plot has reminded us that there are people out there who would happily blow all of us up."
He said: "Failure would have a catalytic effect on militant Islam around the world and in the region because the message would be that al-Qaeda and the Taliban have defeated the US and the British and Nato, the most powerful alliance in the world. So why wouldn't that have an intoxicating effect on militants everywhere? The geo-strategic implications would be immense."
All right, so the monolithic Takfiri Jihadists in the world will then band together and continue taking over every country at will if we abandon Afghanistan? I have my doubts. The last time we invoked the Domino argument was Vietnam, and it was an utterly false assumption: after the US withdrawal from Vietnam, there were more wars among the Communist countries of Southeast Asia than anything else: Communism completely failed to take hold over the rest of Southeast Asia. Just as there was no monolithic Communism, there certainly is no monolithic Muslim jihadism (in case you didn't notice from all the sectarian violence going on).
One of the worst strategic blunders on the part of al Qaeda (and similar takfiri groups) is their propensity to cause mass civilian casualties among the Muslim community--significantly reducing their appeal. They also appear to have little interest in actual nation-building and governance. (T.E. Lawrence said it best--insurgents rarely make effective civil leaders). Especially in light of the elections in Iran, which showed considerable disinterest in the leadership of the ayatollahs and the like, I have my doubts that the Muslim world is going to rush to accept militant jihadism as a form of governance in the wake of an American withdrawal.