US warns North Korea against 'irresponsible provocation'

  • AFP, Seoul
  • Updated: Sep 16, 2015 11:05 IST
North Korean leader Kim Jong Un paying tribute to the fallen fighters of the Korean People's Army at the Fatherland Liberation War Martyrs Cemetery on the 62nd anniversary of Korean War. On Sept 15, 2015, North Korea announced it has revamped and restarted all its atomic bomb fuel production plants. (Reuters File Photo)

The United States on Tuesday urged North Korea to refrain from "irresponsible provocation" after the communist state confirmed restarting of a nuclear reactor seen as its main source of weapons-grade plutonium.

Pyongyang's confirmation, by the head of the North's Atomic Energy Institute (AEI), came hard on the heels of suggestions by the chief of the national space agency of a possible satellite rocket launch next month.

White House spokesman Josh Earnest said: "North Korea should refrain from irresponsible provocation that serve only to aggravate regional tensions."

He added that Pyongyang should "refrain from actions and rhetoric that threaten regional peace and security" and "focus instead on fulfilling its international obligations and commitments".

The US intervention came as analysts saw North Korean moves as aimed at raising tensions in order to place North Korea firmly on the agenda of an expected US-China summit later this month.

In an interview with the North's official KCNA news agency, the director of the AEI, who was not named, said all facilities at the Yongbyon nuclear complex - including the five-megawatt reactor - had "started normal operations".

North Korea mothballed the Yongbyon reactor in 2007 under a six-nation aid-for-disarmament accord, but began renovating it after its last nuclear test in 2013.

When fully operational, the reactor is capable of producing around six kilos (13 pounds) of plutonium a year - enough for one nuclear bomb, experts say.

'Improved' nuclear deterrent

The AEI director said scientists had been "steadily improving" both the quality and quantity of the North's nuclear deterrent and he issued a by-now standard warning to the United States.

"If the US and other hostile forces persistently seek their reckless hostile policy ... (North Korea) is fully ready to cope with them with nuclear weapons any time," he said.

The warning followed strong hints from Pyongyang that it is considering a satellite rocket launch to mark the 70th anniversary of the founding of the ruling Workers' Party of Korea (WPK) on October 10.

"The world will clearly see a series of satellites... soaring into the sky at the times and locations determined by the WPK central committee," the director of the North's National Aerospace Development Administration said late Monday.

The North insists its rocket launches are intended to put peaceful satellites into orbit. The United States and its allies see them as disguised ballistic missile tests.

North Korea's main diplomatic ally China has protected it from tougher sanctions over its nuclear and missile tests, but is seen as increasingly impatient with its provocative behaviour.

Targeting China-US summit

Some analysts pointed to Chinese President Xi Jinping's scheduled state visit to the United States later this month as a reason for the North's recent statements.

"Pyongyang wants the North Korea issue high on the agenda of Xi's talks with President Obama," said Koh Yu-Hwan, a North Korea expert at Dongguk University in Seoul.

"The North always wants the attention of the global community and knows that flagging its weapons programmes is one way to get it," Koh said.

The North's only successful satellite launch was one using the Unha-3 rocket in December 2012 - a move that resulted in fresh sanctions and a surge in military tensions that culminated two months later in the North's third nuclear test.

South Korea and Japan both warned, on Tuesday, that any fresh launch would violate UN resolutions banning the North from using ballistic missile technology.

Urging Pyongyang to refrain from what would be a "serious act of provocation," Seoul said it would not hesitate to press the UN Security Council for "a quick and effective response".

China also called on Pyongyang to "earnestly adhere" to UN resolutions and warned against any actions that might escalate tensions on the Korean peninsula.

Recent satellite images show the North has carried out significant upgrades of facilities at its main Sohae satellite launch station.

Analysts at the US-Korea Institute at Johns Hopkins University believe the Sohae launchpad can now handle rockets up to 50 metres (165 feet) in length -- almost 70 percent longer than the Unha-3 rocket.

The Unha-3 is seen as a prototype intercontinental ballistic missile (ICBM), although the North has yet to conduct a test showing it has mastered the re-entry technology required for an effective ICBM capability.

Developing a working ICBM would be seen as a game-changer, bringing the mainland United States within range of a possible nuclear strike.

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