Senior Airman Dylan Haddock, 36th Aircraft Maintenance Unit weapons load crew member, prepares a munition to be loaded onto an F-16 Fighting Falcon during a quarterly weapons load crew competition at Osan Air Base, Republic of Korea, Oct. 4, 2013. Load crew competitions are held to give weapons personnel the opportunity to display their war-fighting skills and to unveil the best weapons load crew for a particular quarter during the year. (U.S. Air Force photo/Senior Airman Siuta B. Ika)
Senior Airman Wyatt McMillin, 25th Aircraft Maintenance Unit weapons load crew member, guides a munition onto an A-10 Thunderbolt during a quarterly weapons load crew competition at Osan Air Base, Republic of Korea, Oct. 4, 2013. During a weapons load crew competition, each member has a set of tasks to carry out and must work on a team of three or four, depending on the aircraft they are assigned to. (U.S. Air Force photo/Senior Airman Siuta B. Ika)
Senior Airman Jordon Leach, 36th Aircraft Maintenance Unit weapons load crew member, works on a weapons platform on an F-16 Fighting Falcon during a quarterly weapons load crew competition at Osan Air Base, Republic of Korea, Oct. 4, 2013. Load crew competitions are held to give weapons personnel the opportunity to display their war-fighting skills and to unveil the best weapons load crew for a particular quarter during the year. (U.S. Air Force photo/Senior Airman Siuta B. Ika)
Staff Sgt. Ryan Garrett, 36th Aircraft Maintenance Unit weapons load crew member, prepares a munition to be picked up and loaded onto an F-16 Fighting Falcon during a quarterly weapons load crew competition at Osan Air Base, Republic of Korea, Oct. 4, 2013. During a weapons load crew competition, each member has a set of tasks to carry out and must work on a team of three or four, depending on the aircraft they are assigned to. (U.S. Air Force photo/Senior Airman Siuta B. Ika)
The latest Twitter threat from the Republican billionaire leader, who took office in January, came as concerns swelled worldwide that a miscalculation by either side could trigger a catastrophic conflict on the Korean peninsula.
"Military solutions are now fully in place, locked and loaded, should North Korea act unwisely. Hopefully Kim Jong Un will find another path!" Trump wrote from his golf club retreat in New Jersey, where he is spending two weeks.
Beijing has repeatedly called for a resumption of long-dormant six-party talks to peacefully resolve the mounting tensions, but its position has been overshadowed by the emerging game of brinkmanship between Trump and Kim.
China's proposal for North Korea to suspend its weapons programs in exchange for a suspension of military drills by the United States and South Korea -- seen by Pyongyang as provocative -- has essentially been ignored.
He also warned Pyongyang it should be "very, very nervous" of the consequences if it even thinks of attacking US soil, after Kim's regime said it was readying plans to launch missiles towards the US Pacific territory of Guam.
Also on Thursday, US Defense Secretary Jim Mattis appeared to step back from his boss's dire rhetoric, describing the prospect of war as "catastrophic" and saying diplomatic efforts to solve the North Korea nuclear crisis were working.
Nearly a week ago, the UN Security Council unanimously passed fresh sanctions against Pyongyang over its weapons program, including export bans, a new punishment that could cost North Korea $1 billion a year.
Relations between Washington and Pyongyang have been tense for months, in the wake of the North's repeated missile tests, including two successful intercontinental ballistic missile (ICBM) test launches in July that brought much of the US mainland within range.
North Korea raised hackles in the United States when it announced a detailed plan to send four missiles over Japan and towards Guam, an island territory of some 165,000 people, where some 6,000 US soldiers are based.
Pyongyang said the scheme to target the island, a key US military outpost in the western Pacific, was intended to "signal a crucial warning" as "only absolute force" would have an effect on a US leader "bereft of reason."
Mattis appeared intent on dialing back the tension, explaining his mission and responsibility was to have military options ready "should they be needed" but stressing the US effort is currently focused on diplomacy.
Calls nevertheless mounted in South Korea for Seoul to develop atomic weapons of its own in light of the situation, with the Korea Herald saying in an editorial: "Now is time to start reviewing nuclear armament."
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