Resolution 181 is not binding, it is was merely a recommendation. The Jews accepted it, but the Arabs who didn't feel bound to it, decided that war would determine the fate of the region instead of international mediation. Unfortunately for them, they lost and Israel was admitted as a UN member within the 1949 expanded borders. By the way, Jews did expell Arabs during the 1948 war, but don't pretend the Arabs were innocent victims. 10% of Israeli Jews were displaced in the course of this war and we didn't need the contribution of new historians to know about it. The expulsions and the massacres against Jews by the Arab armies were carried out with pride. But anyway, had the Arabs accepted the partition plan, or had they accepted to renegociate it at their advantage (which was possible at the time, but they preferred to boycott the UNSCOP), they could have gotten a much metter deal and no one would've been expelled. Finally, as I said, wanting those who already have a territory to give a small chunk of it those who don't have any, so that all people's can have a state of their own is not colonialist. You can disagree with that logic, but you can't say pretend it is based on white supremacism.
13 security personnel killed in Iraq suicide bombing (DPA)