US President Donald Trump's Gaza peace plan was a "vital opportunity" to stop bloodshed in the Palestinian territory "once and for all', UN rights chief Valker Turk said Saturday. Trump has called on key US ally Israel to stop the fighting in the Gaza Strip, while Hamas says it is ready to release all captives and start talks to end the nearly two-year war. The World Health Organisation also welcomed the plan, particularly the prospect of reconstructing hospitals. "In two years, we have never been closer to securing peace than now. Too many lives been lost and shattered," the UN health agency's chief Tedros Adhanom Ghebreyesus said in a statement.