Those options are "not only effective but overwhelming", Trump added for his part, after reviewing a military base near Washington. She said, however, that options for dealing with the regime of Kim Jong Un are not limited to diplomacy.
A White House reporter asked Haley about Trump's speech next week at the U.N. General Assembly and what might be said.
At a White House press briefing on Friday, National Security Advisor H.R. McMaster said that, while it would not be the administration's preferred choice, there is a military option to deal with Pyongyang. He calls on all nations to enforce them and do everything they can to address the threat and prevent war. North Korea has launched dozens of missiles under Kim Jong Un's leadership to accelerate a weapons programme created to give it the ability to target the United States with a powerful, nuclear-tipped missile. "It's not what we'd prefer to do".
Since President Trump threatened North Korea with "fire and fury" in August, the North has conducted its most powerful nuclear test, threatened to send missiles into the waters around the U.S. Pacific island territory of Guam and launched two missiles of increasing range over Japan.
North Korea, according to McMaster, is "one of the world's most urgent and risky security problems".
The last set of sanctions included restrictions on North Korea's oil imports and a ban on its textile exports. She said they were continuing to work on reform at the United Nations and said that finally the body is taking action on certain issues.
The increasing levels of sanctions are expected to cut off 90 percent of North Korea's trade.