Israeli Prime Minister Benjamin Netanyahu on Friday ordered his spy chief to Qatar for talks with mediators on a Gaza war ceasefire that could see the release of captives still held in the war-torn enclave, sources said. Amidst new optimism over a possible breakthrough, Netanyahu called a meeting of his security cabinet for late Thursday to discuss new Hamas proposals sent through Qatari and Egyptian mediators, reports said. Dozens of hostages are believed to be still alive in Gaza while the war continues to take an increasing humanitarian toll in the devastated Palestinian territory, with the…