The Palestinian Authority has held Israel entirely responsible for the escalation of violence in the occupied West Bank and Jerusalem, following a massacre where Israeli forces killed nine Palestinians in Jenin on Thursday. The deadly massacre was followed bya shooting by a Palestinian outside a synagogue in the settlement of Neve Yaacov in occupied east Jerusalem, which killed seven Israelis, and a second shooting by a Palestinian boy in Jerusalem which wounded two Israelis. The PA, led by President Mahmoud Abbas, accused Israel of not committing to peace efforts and violating international l…