US President Donald Trump has said the United States will “solve” the nuclear threat from North Korea, with or without China’s help.

Pressed on whether he thought he could succeed alone, he replied: “totally.”

Mr Trump was speaking ahead of a scheduled visit from Chinese President Xi Jinping this week.

He did not give any further details on what action he would take.

There are fears that Pyongyang could eventually develop the ability to launch long-range nuclear missiles capable of striking the mainland us.

During a trip to Asia in March, U.S. Secretary of State Rex Tillerson said pre-emptive military action was an option “on the table”.