You may join the other side, the ones that killed your family? I really don't know what to say that would'nt be rude!
Al, I think Nick was surmising what he may do if a 'foreign' force dropped a bomb on his family in his own country (instead of bombing the 'bad guys') which would act as a kind of catalyst forcing him into the arms of the 'bad guys' so to speak. At least, that's how I read it.
I leave it to you to fill in the (purely theoretical of course) players & nations.