A spokesperson for North Korea’s Foreign Ministry said US and South Korean efforts to strengthen nuclear cooperation against Pyongyang would not change the country’s status as a nuclear weapons state.

“The ‘denuclearization’ is an irreversibly finalized matter,” the statement carried by state media KCNA said.

The remarks came after US and South Korean officials held talks in Seoul under the Nuclear Consultative Group, where they discussed strengthening nuclear deterrence and military readiness in response to North Korea’s expanding weapons program.

Washington and Seoul have repeatedly called for the dismantlement of North Korea’s nuclear arsenal, while Pyongyang has insisted that its nuclear capabilities are necessary for national security.

Tensions on the Korean Peninsula have continued to rise as North Korea expands missile testing and deepens military cooperation with Russia.

State media reported that Kim visited the newly unveiled facility on Wednesday, where he reviewed operations and long-term production plans. Photos released by the Korean Central News Agency showed what appeared to be a centrifuge hall used for enriching uranium, a key component in nuclear weapons.

South Korea’s Joint Chiefs of Staff assessed the site as a uranium enrichment facility and said Seoul was closely coordinating with the United States to monitor North Korean nuclear activities.

Kim said the need to strengthen North Korea’s nuclear deterrent had grown amid what he described as increasing military threats from the United States and its allies. He claimed the country’s production capacity for weapons-grade nuclear materials has more than doubled over the past five years.

The announcement underscores Pyongyang’s continued push to expand and modernize its nuclear arsenal following the collapse of nuclear diplomacy with the United States in 2019. International nuclear watchdog officials have previously reported increased activity at North Korean nuclear facilities.

In a written message read on Iranian state television, Khamenei said Iran’s scientific and military capabilities, including its nuclear and missile programs, formed part of the country’s sovereign identity and would be defended like its territorial integrity.

“Ninety million proud and honorable Iranians inside and outside the country regard all of Iran’s identity-based, spiritual, human, scientific, industrial and technological capacities from nanotechnology and biotechnology to nuclear and missile capabilities as national assets,” he said.

He added that Iranians would protect those capabilities “just as they protect the country’s waters, land and airspace.”Khamenei has led Iran since Feb. 28, following an airstrike that killed his father, former Supreme Leader Ali Khamenei, during the early phase of the U.S.-Israel conflict with Iran.

In his statement, he also sharply criticized the U.S. military presence in the Gulf region, saying the only place Americans belonged in the Arabian Gulf was “at the bottom of its waters.”“By God’s help and power, the bright future of the Arabian Gulf region will be a future without America,” he said, adding that regional prosperity should be determined by neighboring states rather than outside powers.

His comments came as the Strait of Hormuz remains effectively under Iranian control following weeks of confrontation, severely disrupting global energy shipments through the strategic waterway that previously handled about one-fifth of world oil supply.

The remarks followed reports that Washington is advancing plans for an international naval coalition to reopen the strait and secure maritime transit after the conflict.According to a U.S. State Department cable seen by Reuters, Washington has invited partner countries to join a proposed coalition called the Maritime Freedom Construct (MFC), aimed at restoring shipping access and building what it described as a post-conflict maritime security framework for the Middle East.

“The MFC constitutes a critical first step in the establishment of a post-conflict maritime security architecture for the Middle East,” the cable said.France, Britain and other allied governments have discussed contributing to such an initiative but indicated they would only participate in efforts to reopen the Strait of Hormuz after active hostilities end.

Oil prices have remained volatile amid fears of prolonged disruption to Gulf shipping routes, with energy markets closely watching whether diplomatic efforts can reduce tensions between Washington and Tehran.

In a post on Truth Social, Trump said Iranian negotiators were “begging for a deal,” dismissing Tehran’s public stance as inaccurate. Araghchi, speaking on state television, said there had been no direct dialogue with Washington, adding that exchanges via intermediaries did not constitute negotiations.

He said Iran was conveying its positions and warnings through friendly countries.The divergence in messaging comes as military operations continue. U.S. and Israeli forces have conducted extensive strikes on Iranian targets since late February, while Iran has launched retaliatory attacks on Israel, U.S. bases, and Gulf states.

A U.S. Central Command briefing said more than 10,000 targets had been struck, with significant degradation of Iran’s naval, missile, and drone capabilities.

The conflict has disrupted global energy flows, particularly through the Strait of Hormuz, a key transit route for oil and liquefied natural gas. Its effective closure has triggered what officials describe as a severe energy shock, driving up fuel prices and straining supply chains across industries from aviation to agriculture.

Sultan Al Jaber, chief executive of ADNOC, described restrictions on Hormuz as “economic terrorism,” warning of global consequences. Governments are considering intervention measures similar to those deployed during the COVID-19 pandemic, as businesses face rising costs and weakening demand.

The World Food Programme has warned that prolonged disruption could push tens of millions into acute hunger, with farmers and fisheries already facing fuel shortages.

A 15-point U.S. proposal, conveyed to Iran through Pakistan, includes reopening the Strait of Hormuz, curbing Iran’s nuclear and missile programs, and halting support for regional allies, according to Israeli sources familiar with the plan.

The White House has not publicly detailed the proposal.Israeli officials expressed skepticism that Tehran would accept the terms and voiced concern that U.S. negotiators could offer concessions.

Iran, according to regional sources, has insisted that Lebanon be included in any ceasefire framework involving Washington and Israel.

Financial markets reflected fading optimism over a near-term resolution. Global equities weakened on Thursday while oil prices resumed their upward trajectory. Analysts cited diminishing expectations of a ceasefire as a key driver of volatility.

The Pentagon is preparing to deploy additional airborne troops to the Gulf, supplementing Marine units already en route, according to sources. The buildup is intended to expand military options as the conflict risks widening.

United Nations Secretary-General Antonio Guterres warned that the situation could escalate further, urging a shift from military confrontation to diplomacy.