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Nuclear weapons: Is full disarmament possible?

As world leaders convene in Washington for a summit on halting the spread of nuclear weapons, a global debate is rising on the merits – and feasibility – of total nuclear disarmament.
Inspectors: Iran possibly working on nuke. What's the evidence?

It's the first time the International Atomic Energy Agency, the UN's nuclear watchdog agency, has said that Iran may be working on a warhead. The IAEA wants specific information on detonators, missile design, and uranium enrichment. So far, Iran says that allegations about a military nuclear program are 'baseless.'
Ahmadinejad adds fuel to Israel debate over Iran nuclear ambitions

Ahmadinejad last night rejected as US forgeries documents reported to detail Iran nuclear plans. Observers say the leak was intended to put pressure on Iran ahead of Obama’s end-of-year deadline for a negotiated solution.
ElBaradei leaves nuclear watchdog with legacy of honesty, Iran leniency

Mohamed ElBaradei stepped down from his post at the UN nuclear watchdog IAEA at the end of November. He's been seen both as an honest broker and as being too soft on Iran.
The roots of Iran's nuclear program

It's quest to develop a nuclear program has taken a circuitous path through history – and includes early cooperation with the US.
UN nuclear watchdog: Can’t rule out other Iran enrichment sites

An inspection of a second enrichment facility in Iran revealed no centrifuges, a new IAEA report said Monday. But the UN nuclear watchdog is concerned there may be other undeclared sites.
Is Russia playing both sides on Iran nukes?

Russia signals that it is open to tougher sanctions on Iran, which has failed to respond to an international uranium deal. But rogue scientists in Russia may be continuing to help Iran pursue a nuclear program.
North Korea can now build one more nuclear bomb

North Korea said Tuesday that it has reprocessed 8,000 nuclear fuel rods – perhaps enough to build another nuclear bomb. US officials say this was a violation of North Korea's commitments to nuclear disarmament talks.
Iran nuclear program: Clock is ticking as uranium collects

It's amassing low-enriched uranium at the rate of 2.75 kilograms per day – enough to give Iran nuclear program enough feedstock for two bombs by February, by one estimate.
Iran stalls nuclear program deal as clock ticks towards sanctions

Iran has 'responded' to a nuclear swap deal. But the IAEA won't say if Iran said 'yes' or 'no.' It appears Iran is making fresh demands. If so, sanctions from the US may be coming soon.
What might derail the Iran nuclear deal?

Negotiators for President Barack Obama and other powers may have a breakthrough deal on Iran's nuclear program. But while they wait for Tehran's Friday answer, some worry that Iran won't deliver.
Why does Iran need more potent uranium? Medical care.

The proposed deal to send Iran's uranium abroad for enrichment is all about fueling a nuclear facility used in the diagnosis and treatment of some illnesses.
Iran's nuclear disclosures: why they matter

A secret nuclear site. ‘Project 110.’ Offers to ship fuel abroad. Part of Iran’s quest to be regional power?
Secret Iran nuclear report: 'Project 110' and other mysteries

The IAEA's assessment, leaked this weekend, offers a detailed look about Iran's nuclear know-how. But it's also vague in some respects.
Obama says Iran must take 'concrete steps' on nuclear issues

The talks in Geneva were historic, but some experts say Iran gained prestige without having to concede much.
Does Obama still want to engage Iran?

The administration's cautious response to the disputed elections reflects the reality that Ahmadinejad may remain president – and Iran's nuclear policy is unlikely to change even if he doesn't.
What next for North Korea's nukes?

The May 25 test provided the world with a host of data about North Korea's bomb-making abilities. But only Pyongyang knows if the test was a success.
US officials weigh Iran's nuclear weapons capability

Defense Secretary Gates said Tehran was not close to having a bomb. A new report in which senior advisers to Obama participated urges further sanctions.
Nuke inspectors at 'dead end' in Iran. More sanctions ahead?

Washington warns of new sanctions after a UN report says Iran is expanding nuclear enrichment activities.
Could North Korea still make nukes?

Destruction of its nuclear cooling tower was important but largely symbolic.
Nuclear report: parsing Iran's intent

As UN nuclear watchdog meets in Vienna, sparring is sharp over Iran's goals for its program.
Iran, U.S. leaning toward talks?

Recent events suggest both Tehran and Washington may be willing to engage in dialogue.
With Syria 'reactor' video, U.S. sends a warning

It lets potential nuclear proliferators Iran and North Korea know it's watching.
Iran's nuclear program: talk of international consortium

Western and Iranian officials consider new framework as Iran program progresses.
Questions persist on Iran's nuclear plans

One example: Data on making uranium metal should have been disclosed, critics say.