Donald Trump will call on world leaders to confront North Korea and Iran in the US president’s first address to the United Nations on Tuesday. Mr Trump is seeking a broad alliance against the two countries that his administration considers the world’s gravest threats. With his remarks, Mr Trump will emphasise that Pyongyang and Tehran’s weapons programmes are too great for any country to remain on the sidelines - according to two US officials who previewed themes of the address on Monday. They declined to say what actions Mr Trump will seek against either nation, nor would they say he plans to single out China or Russia as enablers of either state. The US president is set to speak in the morning following UN Secretary-General António Guterres, General Assembly President Miroslav Lajčák and Brazil’s president Michel Temer. In the speech, expected to last 30-45 minutes, Mr Trump also will discuss the situation in Venezuela and international efforts to combat terrorism, referring to terrorists as “losers’, as he did during a visit to the Middle East in May, the administration officials said. “Big day at the United Nations - many good things, and some tricky ones, happening,” Mr Trump tweeted Tuesday. <strong>_______________</strong> <strong><em>The National</em> at the United Nations General Assembly</strong> <strong><a href="https://www.thenational.ae/world/the-americas/uae-envoy-urges-reform-of-the-united-nations-1.629444">UAE envoy urges reform of the United Nations</a></strong> <strong><a href="https://www.thenational.ae/opinion/reform-takes-centre-stage-at-the-un-as-it-faces-up-to-its-failings-1.629402">Reform takes centre stage at the UN as it faces up to its failings</a></strong> <strong>Editorial: <a href="https://www.thenational.ae/opinion/editorial/the-uae-is-at-the-forefront-of-the-effort-to-revitalise-the-united-nations-1.629683">The UAE is at the forefront of the effort to revitalise the United Nations</a></strong> <strong><a href="https://www.thenational.ae/world/the-americas/un-general-assembly-delegates-and-observers-await-trump-speech-with-bated-breath-1.629373">Delegates and observers await Trump speech with bated breath</a></strong> <strong><a href="https://www.thenational.ae/world/the-americas/eight-kilometres-and-a-million-miles-separate-two-takes-on-us-islamic-relations-1.629430">Eight kilometres (and a million miles) separate two takes on US-Islamic relations</a></strong>