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Correction: United States-North Korea-Nuclear story

February 25, 2015

WASHINGTON (AP) — In a story Feb. 24 about North Korea’s nuclear program, The Associated Press reported erroneously that estimates of North Korea’s future nuclear stockpile were made by the U.S.-Korea Institute at Johns Hopkins School of Advanced International Studies. The estimates were presented as part of a project conducted by the U.S.-Korea Institute, but were made by the Institute of Science and International Security.

A corrected version of the story is below:

US institute: NKorea nuke arsenal set to multiply

US institute: NKorea nuclear arsenal could multiply in the next 5 years

By MATTHEW PENNINGTON

Associated Press

WASHINGTON (AP) — North Korea could increase its nuclear arsenal from at least 10 weapons today to between 20 and 100 weapons in five years, U.S. researchers said Tuesday, as the Obama administration vowed to work with U.S. allies to pressure Pyongyang to denuclearize.

The forecast of the secretive Asian nation’s nuclear stockpile is based on projections made by American experts on weapons technology and the experience of nuclear programs of countries such as Israel, Pakistan, India and China. The estimates were prepared by the Washington-based Institute for Science and International Security, as part of a project conducted by John Hopkins School of Advanced International Studies to examine Pyongyang’s emergence as a small nuclear power.

The Associated Press obtained a presentation of the findings ahead of their publication by 38 North, the website of the school’s U.S.-Korea Institute.

It comes as the U.S. and South Korea prepare for annual military drills that have angered North Korea, and as U.S. lawmakers push legislation that would tighten sanctions intended to restrict leader Kim Jong Un’s access to the international banking system. Aid-for-disarmament negotiations have stalled since 2008, and the North has since conducted two nuclear tests, fired a rocket into space and unveiled a long-range, road-mobile missile, deepening concern in Washington over its capabilities.

“The United States remains committed to the peaceful denuclearization of the Korean Peninsula and will continue - in close consultation with our allies — to bring pressure to bear on North Korea in support of that goal,” Secretary of State John Kerry said in congressional testimony Tuesday.

But North Korea struggles for attention in a crowded U.S. foreign policy agenda. During two Senate hearings, Kerry was peppered with questions about Ukraine, the fight against the Islamic State group and nuclear negotiations with Iran, but none on North Korea.

U.S.-Korea Institute concluded that North Korea has made important progress in its weapons programs in the past five years, and those programs “appear posed for significant expansion over the next five years, presenting a serious challenge to the United States, Northeast Asia and the international community.”

In its analysis, the Institute for Science and International Security estimated that North Korea currently has between 10 and 16 nuclear weapons, some based on plutonium, others on uranium. It has come up with various scenarios on how that stockpile could grow by 2020.

Under the “minimal growth” scenario, the North would have 20 weapons with yields of about 10 kilotons. A kiloton is equivalent to the destructive impact of 1,000 kilograms of TNT. The U.S. bomb dropped on Hiroshima, Japan, in 1945 was estimated to have a yield of 15 kilotons.

Under the “rapid growth” scenario, in which the North accelerates nuclear production and makes significant advances in weapons designs, it would have 100 weapons with average yield of 20 kilotons, and some of 50 kilotons.

Despite orthodox opinion that North Korea has yet to miniaturize a nuclear device that could fit on a missile that could target America, the institute concludes the North already has plutonium-based weapons small enough to mount on medium-range and intercontinental-range missiles.

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