The Stuxnet computer worm caused relatively limited damage to Iran's nuclear program and failed to stop the Islamic republic stockpiling enriched uranium, a U.S.-based think-tank said in a report. Full story
Britain is talking to other countries about stepping up pressure on Iran to freeze uranium enrichment, Foreign Secretary William Hague said on Monday. Full story
The collapse of another attempt at international outreach to Iran has left world powers with few options except to wait — and hope that the bite of sanctions will persuade Tehran to reconsider its refusal to stop activities that could be harnessed to make nuclear weapons. Full story
Iran will be able to carry out uranium enrichment even in the case of a military attack on its nuclear facilities, Iran's nuclear envoy said in Moscow on Thursday. Full story
Diplomats from six nations and the Arab League toured Iran's main uranium enrichment facility on Sunday in a visit organized by Tehran in hopes of bolstering its assurances that its nuclear work is entirely peaceful. Full story
Iran's invitation last week to selected diplomats to visit its nuclear facilities looks to be a stalling tactic as it builds its stockpiles of enriched uranium in the teeth of international sanctions. Full story
Rachel Maddow interviews Thomas D'Agostino, head of the National Nuclear Security Administration, about the removal of weapons grade uranium from Ukraine, avoiding a potential global catastrophe.
David Albright of the ISIS talks about North Korea’s changing strategy and how it should affect the way President Barack Obama reacts to the conflict.
Geoff Morrell, Pentagon press secretary and deputy assistant secretary of defense, speaks with MSNBC's Savannah Guthrie about the artillery attack by North Korea on a South Korean island.
The New York Times’ David Sanger shares his thoughts on indications that North Korea may have secretly built a vast advanced uranium enrichment plant, potentially capable of producing powerful atomic bombs.
Officials are confronting the threat of a uranium enrichment plant that could supply enough material to dramatically expand the nation’s nuclear arsenal. NBC’s Mike Viqueira reports.
Iranian President Mahmoud Ahmadinejad, center, join hands with his Brazilian counterpart Luis Inacio Lula da Silva, second left, and Turkish Prime Minister Recep Tayyip Erdogan, after Brazilian Foreign Minister Celso Amorim, seated left, his Iranian counterpart Manouchehr Mottaki, seated at center,
