The Security Council resolution that ended the monthlong war with Israel called for the disarmament of Hezbollah. But new reports suggest the group continues to smuggle in weapons from Syria, which, if true, could threaten the delicate peace in the region.

Pressure on North Korea to cease its nuclear proliferation and cancel any future nuclear testing continues to build even though Pyongyang shows no sign of changing its behavior.

Pyongyang is defiant in the face of Security Council sanctions imposed against the new nuclear power, even as the UN resolution’s effectiveness continues to be questioned.

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.

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.

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.

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.

Iran appears to be headed for another showdown with the West over its nuclear program. Meanwhile, an eighteen-year-old letter from Ayatollah Khomeini is generating debate inside Iran about the proper path for resolving the nuclear issue.

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.

The UN visit of Iranian President Mahmoud Ahmadinejad and his multiple meetings and media appearances seem to have temporarily taken the steam out of U.S. efforts to isolate him. The start of the UN General Assembly session has been notable for the level of anti-American invective by speakers.

A breakthrough in the impasse over Iran’s nuclear program may emerge if Tehran agrees to temporarily suspend its uranium-enrichment activities and Washington puts off its push for sanctions.

Pakistani officials say nuclear scientist A.Q. Khan, a national hero, is under house arrest for spreading nuclear technology to rogue regimes. Yet the seeds sowed by his proliferation network may pose a threat to the United States for years to come.

The August 31 deadline has passed with no agreement. Iran has remained steadfast in its pursuit of nuclear technology while the UN Security Council scrambles for a solution to the impasse.

Iran continues to flex its muscles ahead of the UN-imposed August 31 deadline to suspend its nuclear activities. With the UN secretary-general traveling to Tehran for talks, Iran has indicated it will not abide by the latest UN resolution.

The UN Security Council has passed a resolution calling on Iran to suspend its uranium-enrichment activities or face sanctions. The vote comes amid deep suspicions about Iran's role in sparking the conflict between Israel and Hezbollah.

The proposed U.S.-India nuclear deal has cleared its first major legislative hurdle but it remains controversial in both countries.

The UN Security Council has barred member states from supplying North Korea with missile parts in response to recent tests. The country with the most leverage in North Korea—China—has mostly buffered Pyongyang from strong action but could be losing patience with its neighbor.

North Korea's recent missile tests and Iran's ongoing quest for nuclear weaponry illustrate the need for an effective strategy to prevent other rogue states from acquiring nuclear technology. A relatively new program to interdict suspect shipments on the high seas is gaining favor around the world.

The international community is divided over how to respond to North Korea's missile tests, with the United States and Japan favoring sanctions, and China, Russia, and South Korea pushing for further diplomatic efforts.