Quds JERUSALEM Families of Israeli hostages in Gaza threatened legal action on Thursday against Prime Minister Benjamin Netanyahu, accusing him of blocking a prisoner swap deal with Palestinians. “We will petition the High Court if you persist in abandoning our loved ones in Hamas captivity,” the families said in a letter to Netanyahu cited by Israeli daily Yedioth Ahronoth. The letter accused the Israeli premier of hindering efforts to reach a prisoner exchange agreement with Hamas. “Refusing