The PA won't exist after September when the UN recognizes the state of Palestine. And the interim government will replace the PA before then. Israel can't blame Abbas and the PA. They recognized Israel, renounced violent resisrance, substantially kept the peace in the West Bank, fought Hamas at the behest of Israel and the U.S., and were willing to compromise on the right of return. But the PA got nothing in return. Israel wouldn't even freeze settlement construction for a few months. Finally, the PLO realized that they have nothing to gain from pointless negotiations with Israel. Did Israel think the Arab Peace Plan would stay on the table forever?
About 2,000 demonstrators protest 'occupation policy and fascist settlers' in Nazareth (Haaretz)