DEIR AL-BALAH, Gaza Strip (AP) — An overnight Israeli strike on a school-turned-shelter in Gaza City killed 23 people, as Arab mediators worked on a proposal to end the war with Hamas that would include a five-to-seven-year truce and the release of all remaining hostages, officials said Wednesday.

France, Germany and Britain meanwhile said Israel's seven-week blockade on all imports to Gaza was "intolerable."

Israel ended a cease-fire with Hamas last month and has vowed to continue the war until all the hostages are returned and Hamas is either destroyed or disarmed and sent into exile.