Terrorism vs. Nationalism

How much of the current middle east crisis is actually spawned from middle east nationalism/jingoism as opposed to radical islam? Something I heard on the radio raised a good point about this. For the most part, much of the violence and anti-west sentiment is blamed on radical muslims that are supposedly attacking israel and the west because it is part of a holy war. But it seems that behind the religious face of this conflict lies something much more tangible, something all wars have in common - the fight over land.