Satellite images suggest that North Korea may have shut down a nuclear reactor that has been a key part of its nuclear weapons program, according to an analysis by a Washington think tank.

North Korea probably has multiple uranium enrichment-related facilities, U.S. intelligence officials said, following North Korea’s decision to reveal one such facility last year.

Pakistan is passing through an extremely delicate phase in its history. Recent instability in Pakistan, including the Taliban's advance into settled areas, prompted the Pakistani military to undertake large-scale military operations in the Swat Valley. As military and Taliban forces fight in the rugged tribal terrain, several Western analysts have raised concerns about the future of nuclear Pakistan. (Continue)

The International Atomic Energy Agency (IAEA) issued a report Sept. 12 indicating that Libya did not provide a full picture of its past nuclear fuel cycle procurement efforts following its renunciation of nonconventional weapons in December 2003. The omissions, however, did not point to any attempt to maintain a weapons-related capability and were only important for uncovering the timeline of Libya’s contacts with the nuclear smuggling network led by Pakistani nuclear official Abdul Qadeer Khan and other avenues Tripoli pursued to obtain nuclear weapons. (Continue)