Daniel Pipes writes an interesting summary with links to articles on the subject:
“Warfare in recent decades has turned historic assumptions upside down. Countries used to be the enemy; now regimes are the enemy, while their subject peoples are our friend. Battlefield superiority used to be the goal, now it is assumed before a shot is fired. Victory used to be the goal, now it’s peace. Promoting one’s own interests was the exclusive goal, now helping the defeated is no less important. Victors used to plunder the vanquished; now victors fund the defeated. Rooting for one’s own side was once assumed, while helping the enemy was treasonous; now, allegiance has become a legitimately open question.”