Trump defended his tough approach on Wednesday as he conceded differences on North Korea with his own top diplomat, Rex Tillerson, who advocates keeping open the possibility of negotiations with Kim's authoritarian government.
The 50th state began a campaign to tell residents about prepping for a potential nuclear attack this summer, after North Korea tested a missile believed to be capable of reaching the islands.
Earlier this week news came out that the United Kingdom, a key US ally and NATO member, has been drawing up military plans for a potential armed conflict with North Korea.
Ri told Tass that the North's nuclear weapons represent a deterrent to protect the country from the U.S. Over the weekend, Kim said having nuclear weapons was a "powerful deterrent firmly safeguarding the peace and security in the Korean Peninsula and Northeast Asia" against "protracted nuclear threats of the USA imperialists".
"We have nearly reached the last point on the journey towards our final goal - to achieve a real balance of power with the United States", he said. Because North Korea is really a world problem, that is beyond just the United States. "That's a world problem, and it's a problem that has to be solved". The regime admitted in a rare article published on its state media late last month that the sanctions were causing "a colossal amount of damage".
Later at night, Trump told Fox News that the world has reached a situation on North Korea where something has to be done. Trump's Director of the Office of Management and Budget, Mick Mulvaney, later said that the president was telegraphing with the statement that "military options are on the table".
"There's one thing that the U.S. Army can do, and that is you've got to be ready to ensure that we have military options that our President can employ if needed", Mattis said.
Mr Trump has been tough on North Korea as the regime has fired a series of ballistic missiles and conducted its sixth and most powerful nuclear test in recent months.
Speaking to Russia's state-run TASS news agency on Wednesday, North Korean Foreign Minister Ri Yong Ho said his country's nuclear program guaranteed peace and safety in the region and would not be a matter of discussion. No action by the North was observed during the 12-hour mission.