Four years too late, Abbas has begun to implement the clauses of the road map that the Palestinian Authority had so far ignored, attempting to impose one law, one army, and one authority over its own territory. (Abbas’s shorthand for this objective—“one gun”— says a great deal about political means and ends among the Palestinians.) It is tragic that Abbas has begun this work only now. But the point, surely, is this: as soon as Hamas emerged victorious in its Gaza takeover, it proceeded to establish its authority, whereas the PA under Fatah studiously avoided doing so, even when it still had the capacity to govern the territories, quell the intifada, and disarm Hamas. This situation raises an impossible dilemma for the international community: the Palestinian government it would like to see in charge is ineffectual; and the Palestinian government with a real chance to impose law and order on the territories is completely unpalatable.
http://www.commentarymagazine.com/contentions/index.php/ottolenghi/598#more-598