And a phone call with China's president: "We discussed trade and a place called North Korea", said the president.
The speech touched on several topics, but the commander in chief spent a lot of time condemning the Hermit Kingdom.
Trump's criticized North Korea and the country's leader, Kim Jong Un, in his speech.
Twice in recent weeks, the U.N. Security Council has agreed to impose sanctions on North Korea for its ongoing nuclear and missile tests.
The United States backed by Japan, South Korea and its western allies are pushing for a strong global response to North Korea after it conducted its sixth and most powerful nuclear test and fired missiles over Japan.
Hagle praised Trump for staying on message and sounding (mostly) like a president.
While the U.S.is willing and able to take military action, Trump added that "hopefully this will not be necessary".
They declined to say what actions Trump will seek against either nation, nor would they say whether Trump plans to single out China or Russian Federation as enablers of either state.
Trump is just one of 37 leaders at the podium Tuesday.
Trump said: "The success of the United Nations depends on the independent strength of its members". The Summit presents the U.S leader an opportunity to make his agenda known, at a time when the world faces escalating nuclear threat from North Korea, the spread of terrorism and the contentious climate change debacle.
Gatilov said that Russian Federation supports reforms saying they must be comprehensive and ensure that effective programs are not cut.
Although Pyongyang will have heard President Trump's comments loud and clear, the North Korean diplomats in NY weren't in the room to hear them.as the North's United Nations ambassador left his seat prior to Trump's arrival.
White House officials said he would refer to Islamist militants as "losers" and criticise Iran and Venezuela.
Trump, who took office in January, also focussed on himself.
Earlier, the United Nations Security Council had condemned the launch of yet another ballistic missile by the Democratic People's Republic of Korea (DPRK) and called on the country's leadership to halt such activities and explore resumption of honest dialogue on de-nuclearisation.