What happened in Yarmuk camp

Let me begin by stating that the Syrian Asad regime historically has shown little regard for the lives of Palestinians in the refugee camp, and the fact that Syria has provided better conditions (legally and otherwise) for Palestinian refugees than other Arab regimes does not satisfy me here.  When the interests of the regime were at stake, it moved (in Lebanon and Syria) brutally and recklessly.  The current crisis in Yarmuk should be blamed on the Syrian regime and on the Syrian rebels, who clearly shot at the food envoy yesterday (according to the statement of the PA's Labor Minister and the internal UNRWA statement that I saw).  Both sides should have agreed to leave the camps out of their ugly war, but neither side cared to adhere to this rule.  Palestinians never suffer only once in their exile.