​​​​​​​ HAMILTON, Canada The Palestinian envoy to the UN, Riyad Mansour, on Wednesday described Israel's ban on the UN agency for Palestinian refugees (UNRWA) as "long-running attempts to liquidate the question of Palestine.” Mansour, at a UN General Assembly session on UNRWA, described an "open assault" by Israel on the UN, specifically targeting UNRWA, which he called "the backbone of the international humanitarian response in Gaza." Mansour emphasized that Israel's assault targets "the