In the midst of North Korea's nuclear test, this article from the New York Times discusses the global nuclear landscape and the risk of a second nuclear age.

The UN Security Council agreed to a resolution sanctioning North Korea but countries like South Korea and China will likely continue economic activity with Pyongyang.

North Korea’s nuclear test may further damage nonproliferation efforts, as well as complicate ongoing negotiations with Iran to suspend its nuclear program. Much will depend on the response from Moscowand Beijing.

North Korea’s nuclear test poses challenges for the nonproliferation regime. Worries range from regional arms races to nuclear material falling into the hands of terrorists.

As a UN resolution drafted by the United States makes the rounds in the Security Council, world leaders differ about how to mete out a punishment for North Korea.

Marcus Noland's op-ed in the Straits Times on a nuclear North Korea and where we go from here.

North Korea’s nuclear test has set off a diplomatic scramble and caused worries that Pyongyang’s nuclear material could fall into the wrong hands or start an East Asian arms race.

Alan D. Romberg, a leading expert on Asia, says that in the aftermath of North Korea’s announced nuclear test, and with China and North Korea “angry” at each other, it falls to the United States to try to get six-party negotiations resumed.

CFR’s Gary S. Samore, an expert on North Korean nonproliferation, says what Beijing and South Korea convey to Pyongyang in private is more important than Washington’s public warnings.

North Korea's decision to test a nuclear weapon undermines years of diplomacy and raises huge questions for the United States, Pyongyang's Asian neighbors, and the international nonproliferation regime.

Washington has responded sternly to Pyongyang's nuclear test threat as Six-Party Talk members debate how to handle the latest twist in the North Korean nuclear standoff.

Michael A. Levi, a CFR expert on nuclear weapons and technology, says North Korea may have decided to announce plans for a nuclear test to offset signs of “weakness” caused by the failure of its long-range missile.

In October 2006, Human Rights Watch (HRW) issued this call for emergency food aid to North Korea to be maintained despite the country’s alleged nuclear test.

The furor over Kim Jong Il's missile tests and nuclear brinksmanship obscures the real threat: the prospect of North Korea's catastrophic collapse. How the regime ends could determine the balance of power in Asia for decades. In this Atlantic Monthly article, Robert Kaplan says the likely winner will be China.