President Trump on Tuesday used Twitter to amplify a Fox News report, based on anonymous sources, that USA spy satellites had detected North Korea loading two cruise missiles on a patrol boat on the country's coast in recent days.
"North Korea best not make any more threats to the United States", Trump said before an unrelated meeting with top aides. They will be met with fire and fury like the world has never seen.
Trump, who receives daily intelligence briefings, would presumably be in a position to know whether USA intelligence officials have reason to believe Kim Jong Un's regime in fact did load cruise missiles onto a patrol boat recently.
The UN Security Council this weekend imposed its toughest ever sanctions on North Korea over its latest test of a ballistic missile that could be used to deliver a nuclear weapon.
The US President said the rogue state faced a power "like the world has never seen" after the Washington Post said North Korea has made a breakthrough in its weapons programme. North Korea has conducted five nuclear tests since 2006, with the most recent occurring September 9, 2016.
"North Korea is not showing any evidence it plans to halt its missile tests", said one official who requested animosity to discuss sensitive information.More news: Google Pixel and Pixel XL get big discounts
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The confidential analysis was completed last month by the US Defense Intelligence Agency, reports The Washington Post.
Officials in the U.S. believe North Korea has up to 60 nuclear weapons.
Americans' support for military action against North Korea grew from 47 percent two years ago to 62 percent in the council's latest poll. Mr. Trump wrote on Twitter.
The new sanctions are the toughest yet, potentially cutting off a third of North Korea's exports and undermining the country's stabilizing economy. It's frighteningly relevant now, as Trump levels threats against North Korea.
In a tweet on Tuesday, Trump said that after many years of failure, countries are coming together to finally address the dangers posed by North Korea.
North Korea's foreign minister Ri Yong Ho said Seoul's proposals lack sincerity when South Korea is imposing sanctions on the North with the United States, the official added.