U.S. B-1B bombers flew this week over South Korea with fighter jet escorts from the allied nation.
Pyongyang rattled its "sword of justice" Friday by vowing to attack the USA territory of Guam with a "salvo of missiles", one day after stating that it will complete its nuclear weapons program no matter how much global pressure the nation faces.
The Pentagon's guided-missile-carrying USS Michigan, an Ohio-class submarine, resurfaced from the depths for a port call in the South Korean city of Busan Friday, the US Pacific Fleet announced, just days before supercarrier USS Ronald Reagan begins a 10-day joint exercise with South Korean and Japanese naval vessels.
The article ended with a familiar warning: that the U.S. would be exclusively responsible for "pushing the situation on the peninsula to the point of explosion".
Asked about North Korea on Friday, President Trump said, "We're totally prepared for numerous things", the Los Angeles Times reports.
During the Wednesday interview, Trump also slammed a deal brokered between North Korea and ex-President, Bill Clinton, as a failure. But North Korea's latest messaging indicates the regime may be ready to carry out what would be its most provocative missile test to date - firing four missiles over Japan and landing around 30 to 40 kilometers (18 to 25 miles) off the coast of the tiny island.
North Korea has made similar threats against the United States for decades.
It remains unclear whether North Korea will lash out with a weapons test during the exercise, as it often has in the past.
White House Chief of Staff John Kelly warned Thursday that Americans should worry about North Korea having the ability to reach the United States with an intercontinental ballistic missile.
"We can't let this to go on". They have detected three similar tremors from near the test site since the North's nuclear test on Sept 3, in which North Korea said it detonated a hydrogen bomb.
Hyon Song-wol became a substitute member of the Central Committee of the Workers' Party, the political engine of the North Korean regime, reports the South Korean news agency Yonhap.