In his first major speech to the United Nations, President Trump on Tuesday threatened to "totally destroy" North Korea if it does not give up its nuclear weapons ambitions.
Earlier this month, Trump sent several tweets warning North Korea to stop the advancement of its nuclear weapons program after it conducted a test of an intercontinental ballistic missile.
"Rocket Man is on a suicide mission for himself, and for his regime...."
Donald Trump laid out an "America first" policy of national self-interest and of non-intervention.by threatening war and the total annihilation of North Korea, as well as the futures of at least two other countries.
Other "rogue nations" which came in for criticism were Venezuela and Cuba‚ with Trump vowing not to lift sanctions against the latter until such time as they improve human rights.
"It is an outrage that some nations would not only trade with such a regime, but would arm, supply and financially support a country that imperils the world", he said.
Trump laid out his "America First" vision of foreign policy, arguing all countries - including the US - should serve the interests of their own people and uphold their sovereignty. He has pulled the United States out of multinational agreements, considered shrinking the US military footprint in the world and deployed bombastic language on North Korea that has been criticized by other world leaders.
In a clear and damning reference to the interventionism of president George W. Bush, a fellow Republican, Trump asserted that when the United Nations was founded after World War Two, "we did not seek territorial expansion or attempt to oppose and impose our way of life on others".
In Trump's landmark first speech at the United Nations in NY, the President laid out a vision for the organisation based on attempting to boost the strength of the individual member states.
He's going to try to make the case that member nations serve the interests of their own citizens when they work together and share in the burden of fighting terrorism, of propping up destabilized.
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"We must uphold respect for law, respect for borders and respect for culture, and the peaceful engagement these allow", Trump said.
Earnest said, "Having sat in the hall of the United Nations where the president of the United States delivers an address for gathered world leaders - that's something I did for the last three years-what you know world leaders are looking for in that room is a coherent strategy for taking on the biggest challenges around the globe. Just like you, as the leaders of your countries, will always and should always put your countries first", Trump said, wringing applause from parts of the assembly.
Turning to Iran, Trump called the 2015 nuclear deal negotiated by his predecessor, Barack Obama, was an embarrassment and hinted that he may not recertify the agreement when it comes up for a mid-October deadline.
In an English-language posted to Twitter, Zarif said "Trump's ignorant hate speech belongs in medieval times, not the 21st-century UN-unworthy of a reply".
Any American president's first speech to the U.N.is an important opportunity for the world to get a sense of his views on foreign affairs and United States' role in the world.
"He aims to unify the world through tactics of intimidation, but in reality he only further isolates the United States".
While running for office, Trump had labeled the United Nations weak and incompetent.
Tuesday's speech was notable for its high-level trash-talking if not for its choice of targets, which were standard for a US president. But the issues at the United Nations are broader, and the geographic spread of Trump's audience wider.
During his presidential campaign, Trump regularly criticized the United Nations for mismanagement and ineffectiveness.