New york: United States President Donald Trump on Tuesday called for an immediate end to the ongoing war in Gaza.Addressing the 80th United Nations General Assembly at UN headquarters in New York City, Donald Trump said: "We have to stop the war in Gaza immediately. We have to immediately negotiate peace."Dozens of world leaders gathered at the United Nations to embrace a Palestinian state, a landmark diplomatic shift that faces fierce resistance from Israel and its close ally, the US.Trump rejected statehood for Palestinians, adopting the stance of Israeli Prime Minister Benjamin Netanyahu. "The rewards would be too great for Hamas," he said, repeating his call for the return of hostages taken by the Palestinian group.Donald Trump said the US wants a ceasefire-for-hostages deal that would see the return of all remaining hostages, alive or dead.Turning to Russia, Trump warned he was ready to impose tough economic measures over the war in Ukraine.Donald Trump argued that other world leaders should adopt his tough-on-migrants policy, touting his own efforts to arrest and deport migrants in the United States illegally, a stance that many countries around the world have viewed skeptically. "It's destroying your country, and you have to do something about it on the world stage," he said.Trump, who has cast himself as a peacemaker in a bid to win the Nobel Peace Prize, complained that the United Nations did not support his efforts to end conflicts around the world.He twinned his complaint with a personal grievance about the U.N.'s infrastructure, saying he and first lady Melania Trump were briefly marooned on a U.N. escalator and that his teleprompter was not initially working."These are the two things I got from the United Nations - a bad escalator and a bad teleprompter," Trump said, noting that Melania Trump nearly fell when the escalator stopped abruptly.