Katherine Doyle------

President Donald Trump delivered a critical address to the United Nations General Assembly, charging the institution with failing to act to solve spiraling conflicts and immigration woes and deriding its "empty words" that “don’t solve war.”

“All they seem to do is write a really strongly worded letter," he said, touting his own peacemaking efforts at a moment of heightened strain with U.S. allies over Palestinian statehood, trade and other flash points.

Trump also called climate change concerns a “con job,” saying international agreements to reduce global warming were “destroying” much of the free world with demands that industrialized nations disrupt their societies even as the developing ones continue to defy the rules.

Instead, he urged the nations before him to forge a new path in partnership with Washington, saying he believed the organization "has tremendous potential" while he touted his own successes and sharply criticizing many of theirs.

“I’m really good at this stuff,” he said. "Your countries are going to hell."

Inside the room, Italian Prime Minister Giorgia Meloni, Finnish President Alexander Stubb, Brazilian President Luiz Inácio Lula da Silva and other leaders listened to Trump speak.

Since his last address to the assembly six years ago, “the guns of war have shattered the peace I forged on two continents,” he said, before he touted his own efforts to bring an end to seven wars and conflicts in seven months.

“I never even received a phone call from the United Nations offering to help in finalizing the deal. All I got from the United Nations was an escalator that on the way up stopped right in the middle ... and then a teleprompter that didn’t work," Trump said, alluding to technical issues at the beginning of his remarks Tuesday.

After his speech, Trump is scheduled to meet with U.N. Secretary-General António Guterres, as well as leaders from Ukraine, Argentina and the European Union, where, he said, many countries stand "on the brink of destruction" because of their green energy projects. He will also take part in a multilateral meeting with Qatar, Saudi Arabia, Indonesia, Turkey, Pakistan, Egypt, the United Arab Emirates and Jordan, White House press secretary Karoline Leavitt told reporters Monday.

Trump said he would soon sit down with Lula, praising their "excellent chemistry."

When Trump addressed the U.N. during his first term, he promised to "reject the ideology of globalism" and urged other countries to join him in a patriotic national embrace. Those remarks drew derisive snickers from the world leaders and dignitaries in the audience.

This year, Trump said he was eager to offer "the hand of American leadership and friendship" to any members of the assembly "willing to join us in forging a safer, more prosperous world."

@NBCnews