North Korea nuclear program in ‘new phase,' warns UN


North Korea's uranium enrichment facility has doubled in size over the last few years, the UN's atomic watchdog chief has warned, as global tensions grow over Pyongyang's burgeoning nuclear weapons program.

Yukiya Amano, head of the International Atomic Energy Agency (IAEA) told the Wall Street Journal that the isolated state's nuclear capacities are being ramped up.

"The situation is very bad... It has gone into a new phase," Amano said, in the report published Monday. "All of the indications point to the fact that North Korea is making progress, as they declared."

International alarm over Pyongyang's military ambitions has risen after a series of missile launches and nuclear tests last year, and earlier this month it fired four rockets in what it described as practice for an attack on United States military bases in Japan.

Pyongyang has rapidly expanded its facilities for enriching uranium and plutonium production in recent years, Amano told the Journal, expressing doubt over the potential for a diplomatic solution.

That marked a sharp divergence from China's insistence on a diplomatic approach to its neighbor, which it has long protected.

In January, South Korea said the North had enough plutonium to make 10 nuclear bombs, as well as a "considerable" ability to produce weapons based on highly-enriched uranium. The North has boosted plutonium supplies by reactivating its once-mothballed nuclear reactor in Yongbyon.

The Trump administration is considering sweeping sanctions aimed at cutting North Korea off from the global financial system as part of a broad review of measures to counter Pyongyang's nuclear and missile threat, a senior U.S. official said on Monday.

The sanctions would be part of a multi-pronged approach of increased economic and diplomatic pressure – especially on Chinese banks and firms that do the most business with North Korea – plus beefed-up defenses by the United States and its South Korean and Japanese allies, according to the administration official familiar with the deliberations.

While the long-standing option of pre-emptive military strikes against North Korea is not off the table – as reflected by U.S. Secretary of State Rex Tillerson's warning to Pyongyang during his Asia tour last week - the new administration is giving priority for now to less-risky options.

The policy recommendations being assembled by President Donald Trump's national security adviser, H.R. McMaster, are expected to reach the president's desk within weeks, possibly before a summit with Chinese President Xi Jinping in early April, the official said, speaking on condition of anonymity. North Korea is expected to top the agenda at that meeting. It is not clear how quickly Trump will decide on a course of action, which could be delayed by the slow pace at which the administration is filling key national security jobs.