SEOUL: North Korea would bolster its defences against the United States and consider restarting “all temporally-suspended activities,” state media KCNA reported Thursday, an apparent reference to a self-imposed moratorium on testing its nuclear weapons and long-range missiles. Tension has been rising over a recent series of North Korean missile tests. A US push for fresh sanctions was followed by heated reaction from Pyongyang, raising the spectre of a return to the period of so-called “fire and fury” threats of 2017. North Korean leader Kim Jong Un convened a meeting of the powerful politburo of the ruling Workers’ Party on Wednesday to discuss “important policy issues,” including countermeasures over “hostile” US policy, the official KCNA news agency said. The politburo ordered a reconsideration of trust-building measures and “promptly examining the issue of restarting all temporally-suspended activities,” while calling for “immediately bolstering more powerful physical means,” KCNA said. The decision appears to be a step beyond Kim’s previous remarks at the end of 2019 that he would no longer be bound by the moratorium on testing nuclear warheads and long-range intercontinental ballistic missiles (ICBMs), after the United States did not respond to calls for concessions to reopen negotiations. Washington’s hostility and threats had “reached a danger line,” the report said, citing joint US-South Korea military exercises, the deployment of cutting-edge US strategic weapons in the region, and the implementation of independent and U.N. sanctions. “We should make more thorough preparation for a long-term confrontation with the US imperialists,” the politburo concluded. North Korea’s warning came hours before the United Nations Security Council was due to convene a closed-door meeting on Thursday to discuss the recent missile tests, at the request of the United States and several other countries. The US State Department and White House did not immediately respond to a request for comment. President Joe Biden made no mention of North Korea during a nearly two-hour news conference on Wednesday held to mark his first year in office. South Korea’s defence ministry said it is monitoring the North’s winter drills while maintaining readiness posture, calling the recent missile tests “serious threats.” The Unification Ministry handling inter-Korean ties warned of further escalation, saying the peninsula should not go back to the confrontational past, and dialogue and diplomacy are the only way forward. “We should brace for more sabre-rattling designed to create a warlike atmosphere — and possibly more provocation testing,” said Jean Lee, a fellow at the Washington-based Wilson Center, adding that Kim will use every opportunity to justify further weapons testing.