The war of words between Israel and Palestinian Islamist factions over the responsibility for casualties in Gaza during the three days of fighting last week escalated on Thursday, with Palestinians insisting that Israel bore full culpability for the loss of life. A PIJ spokesman angrily disputed Israeli claims that errant rockets from Gaza had resulted in the death of Palestinian civilians, asserting that “Israel began the military round and therefore it bears responsibility for all the results of that military round.” “These are wrong and false allegations Israel is making to escape its responsibility for the killing of civilians and...