I think the American Army by purely focusing on irregular may be in for a surprise as the future enemy say of the likes of Hezbollah would most certainly like to undertake a totally different form of warfare which some writers have called as hybrid warfare and what i would like to term as asymmetrical hybrid warfare. This implies that the opponent will seek to use a form of war and not just weapons in which he finds there is an underlying weakness. Thus if it is felt that the missile defence systems of an opponent is weak, he may launch a missile attack, if he is vulnerable to a nuclear strike, he will launch a nuclear attack, in case he is vulnerable to a terrorist attack, he will launch a terror strike and so on. So by merely focuinsg on irregular warfare, we may once again surprised and stick to what we are normally accused of, fighting the next war with the last wars presuppositions