President Eisenhower overruled some of his military commanders in summer 1958, ordering them not to use nuclear weapons against China if communist forces blockaded the Taiwan Strait, according to declassified Air Force documents.
The United States is close to finalizing a deal with North Korea over its nuclear program, senior State Department officials tell CNN.
Iran has assembled hundreds of advanced machines reflecting a possible intention to speed up uranium enrichment, diplomats have told The Associated Press
Saudi Arabia most likely would develop nuclear weapons if Iran acquires them, according to a report to the Senate Foreign Relations Committee
North Korea's Foreign Ministry blamed the United States Friday for the stalemate in nuclear talks, saying America's "unjust" demands would have a "serious impact" on denuclearization.
The Pentagon plans to probe a politically sensitive 'misshipment' of nuclear missile components to Taiwan - Beijing's arch-nemesis
President Nicolas Sarkozy announced a modest cut Friday in France's nuclear arsenal, to fewer than 300 warheads, and urged China and the United States to commit to no more weapons tests
The United States predicted a quick vote on a third resolution imposing sanctions on Iran over its nuclear program as it begins to build a case against Iran's central bank for proliferation activities, senior State Department officials and European diplomats said.
The president of Iran vowed Saturday that his country will not be held back from developing its nuclear program, and accused other nations of being jealous of its technological advances.
Iran has rejected documents that link it to missile and explosives experiments and other work connected to a possible nuclear weapons program
President Eisenhower overruled some of his military commanders in summer 1958, ordering them not to use nuclear weapons against China if communist forces blockaded the Taiwan Strait, according to declassified Air Force documents.
The United States is close to finalizing a deal with North Korea over its nuclear program, senior State Department officials tell CNN.
Iran has assembled hundreds of advanced machines reflecting a possible intention to speed up uranium enrichment, diplomats have told The Associated Press
Saudi Arabia most likely would develop nuclear weapons if Iran acquires them, according to a report to the Senate Foreign Relations Committee
North Korea's Foreign Ministry blamed the United States Friday for the stalemate in nuclear talks, saying America's "unjust" demands would have a "serious impact" on denuclearization.
The Pentagon plans to probe a politically sensitive 'misshipment' of nuclear missile components to Taiwan - Beijing's arch-nemesis
President Nicolas Sarkozy announced a modest cut Friday in France's nuclear arsenal, to fewer than 300 warheads, and urged China and the United States to commit to no more weapons tests
The United States predicted a quick vote on a third resolution imposing sanctions on Iran over its nuclear program as it begins to build a case against Iran's central bank for proliferation activities, senior State Department officials and European diplomats said.
The president of Iran vowed Saturday that his country will not be held back from developing its nuclear program, and accused other nations of being jealous of its technological advances.
Iran has rejected documents that link it to missile and explosives experiments and other work connected to a possible nuclear weapons program
A mild escalation of U.N. measures and U.S. pressure on banks is unlikely to change Tehran's nuclear stance
South Korean President-elect Lee Myung-bak said on Monday he is willing to meet with North Korean leader Kim Jong Il to help in the denuclearization process as the reclusive Communist nation dismantles its nuclear program.
Pakistan's foreign ministry Wednesday rejected concerns raised by the U.N. nuclear watchdog chief that the country's nuclear weapons "could fall into the hands of an extremist group in Pakistan or in Afghanistan."
Iran's first nuclear power plant will be operational within three months, providing electricity to Iran's national power grid by the summer, according to Iranian Energy Minister Parviz Fattah.
Russia started delivering nuclear fuel to Iran's Bushehr nuclear power plant this week as part of a compromise effort to alleviate concerns over Iran's nuclear intentions while supporting Iran's right to a nuclear energy program.
Israeli Prime Minister Ehud Olmert said Tuesday international pressure on Iran has been effective and may need increasing -- despite a U.S. intelligence report that Tehran stopped work on nuclear weapons fours years ago.
U.S. Defense Secretary Robert Gates has called on the international community to step up pressure on Iran to vow not to develop nuclear weapons, to suspend uranium enrichment and to open up its nuclear facilities for inspection.
The deputy intelligence chief tried Thursday to squash any suggestion that the newly released assessment on Iran's nuclear weapons program indicates Iran is less of a threat.
The U.S. has argued that Iranian, rather than Russian, missiles are the target of its planned defensive system. That may have become a tougher sell
What the new report claiming Iran stopped its weapons program tells us about our spy network and the White House
President Bush was told in August that Iran's nuclear weapons program "may be suspended," the White House said Wednesday, which seemingly contradicts the account of the meeting given by Bush Tuesday.
The National Intelligence Estimate on Iran's threat has been a game changer. Each player has a different reading
Iranian President Mahmoud Ahmadinejad on Wednesday called a U.S. intelligence report that downgraded his country as a nuclear threat "a declaration of victory" for the Iranian nuclear program.
By diminishing the prospect for military confrontation, the new US assessment of Iran's nuclear program may boost diplomatic consensus
Democratic presidential candidate Sen. Joe Biden on Tuesday said he can't believe President Bush hasn't known for months about a recent intelligence estimate that downplays the nuclear threat from Iran.
Iran remains a danger to the world even though it stopped a program to develop a nuclear weapon four years ago, President Bush said Tuesday.
Despite an intelligence report on Iran's nuclear program, President Bush said Tuesday that the international community should continue to pressure the nation
Iran halted work toward a nuclear weapon under international scrutiny in 2003 and is unlikely to be able to produce enough enriched uranium for a bomb until 2010 to 2015, a U.S. intelligence report says.
After months of warning that Iran was racing along a one-way street to developing a nuclear bomb, and after toughening its own sanctions and pushing through restrictions in the United Nations, the U.S. is suddenly changing its tune about Iran's intentions and the timetable of when it might be able to make a bomb.
ran halted its nuclear weapons development program in the fall of 2003 under international pressure but is continuing to enrich uranium
The European Union's foreign policy chief said Friday he was "disappointed" by the latest talks with Iran over the nation's nuclear program, a failure that could result in more sanctions for the Middle Eastern nation.
The nation's three nuclear weapons laboratories have had almost 60 serious accidents or near misses in the past seven years, according to a report released Wednesday by the Government Accountability Office.
Analysis: In the wake of a new report on Iran's nuclear program, the urgency for a confrontation soon is waning
The release of five Iranians held by U.S. forces is the latest sign of attempts to dial back from the tough talk of a confrontation over Iran's nuclear ambitions
The future of troops in Iraq and the potential of a U.S. showdown with Iran dominated much of Tuesday's Democratic presidential debate -- with front-runner Hillary Clinton's votes on the two issues at the center.
Analysis: A hardening of positions in both Washington and Tehran has created something of a diplomatic perfect storm
Israeli Prime Minister Ehud Olmert said Tuesday that Iran's controversial nuclear program is "a major issue for the entire world" and called for stronger sanctions against Tehran.
Moscow is engaged in its own strategic competition with the U.S., which may guide its response to the Iran nuclear standoff
Representatives of world powers Friday announced that unless a November report shows a "positive outcome" of talks with Iran about its uranium enrichment program, they will move ahead with plans for a resolution imposing additional sanctions on the country.
Below is a chronology of the development of North Korea's nuclear weapons program.
Former national security adviser Zbigniew Brzezinski likened U.S. officials' saber rattling about Iran's alleged nuclear ambitions to similar statements made before the start of the Iraq war.
While the French foster a sense of urgency over Iran's nuclear program, Tehran's neighbors are fearful of a showdown
U.S. Secretary of State Condoleezza Rice cautioned the U.N. nuclear watchdog group Wednesday not to interfere with international diplomacy over Iran's alleged weapons program.
The United States and its allies can "live with" a nuclear-armed Iran, but they should continue pressuring the Islamic Republic to keep it from developing an atomic bomb, the former commander of U.S. forces in the Middle East said Monday.
Dalat Nuclear Research Institute stands on a mountaintop in Vietnam's southern highlands. The nuclear reactor is not what most Vietnamese think of when they think of Dalat. The town, nestled in pine woods, is Vietnam's favorite honeymoon spot.
Iran's foreign ministry criticized France on Monday for a blunt warning over the weekend that Europe must prepare for war if Tehran continues to flout international demands to stop producing nuclear fuel.
The chief U.N. nuclear inspector criticized talk of attacking Iran as "hype" on Monday, saying the use of force should only be considered as a last resort
Six nuclear warheads on cruise missiles were mistakenly carried on a flight from North Dakota to Louisiana last week, prompting a major investigation, military officials have confirmed.
North Korea agreed Sunday to declare and disable all its nuclear programs by the end of the year, the chief U.S. negotiator said -- the first time the communist country has offered a timeline to end its secretive atomic program.
The top U.S. nuclear negotiator said Friday that he will use weekend talks with North Korea to resolve issues that could impede progress in broader international talks over its nuclear program.
Kazakhstan's nuclear orphans are a distressing sight.
Iran and the International Atomic Energy Agency both said on Tuesday they had made progress in talks about Tehran's offer of more transparency aimed at defusing a row over the Iranian nuclear program.
The United States and India announced Friday a landmark deal on nuclear cooperation for civil purposes that they said will benefit both countries and strengthen international non-proliferation efforts.
British Prime Minister Gordon Brown said Monday that tougher sanctions are likely against Iran over its contested nuclear program and declined to reject outright the prospect of future military action
The U.S. and North Korea are talking again, but will Pyongyang keep its promise to abandon nuclear weapons?
Iranian President Mahmoud Ahmadinejad warned Tuesday that imposing new sanctions against his country would be like "playing with the lion's tail."
The Secretary of State rejected concessions to Iran over its nuclear program Thursday and renewed a conditional offer to talk to the clerical regime on any subject
U.S. diplomats said Monday's scheduled talks with Iran will be limited to discussions about Iraq's security, and not about the unresolved issues of detained Americans in Iran or the country's nuclear program.
Iranian President Mahmoud Ahmadinejad ruled out even a brief halt in Iran's nuclear program, saying Thursday it would hand a victory to the country's enemies and undercut the Islamic state's goal of becoming a world power
The U.N. nuclear monitor reported notable advances in Iran's uranium enrichment program Wednesday while warning for the first time that its knowledge of the country's nuclear activities was shrinking
Iran's president announced Monday that his country has begun production of nuclear fuel on an "industrial level."
Iran's foreign minister rejected a unanimous vote by the U.N. Security Council on Saturday to impose new sanctions on Iran because of its refusal to suspend its uranium enrichment program.
The Bush administration Tuesday applauded a Russian ultimatum to Iran that it will not supply fuel for Iran's Bushehr nuclear power plant until Iran agrees to suspend uranium enrichment.
Iranian President Mahmoud Ahmadinejad has asked to go before the U.N. Security Council when it debates and votes on a resolution to impose sanctions for Iran's refusal to stop uranium enrichment, the president of the Security Council said Thursday.
The Iranian president scoffed Wednesday at a U.N. Security Council demand that the Islamic republic halt its uranium-enrichment program.
U.S. officials on Tuesday defended the Bush administration's policy shift on North Korea, which coincided with an agreement by Pyongyang to begin to close down its nuclear program.
Iran's controversial president Mahmoud Ahmadinejad said Sunday his country will make an announcement in April about new nuclear achievements.
North Korea on Saturday expressed outrage at a British newspaper's report that Pyongyang was sharing its nuclear weapons technology with Iran, dismissing it as a "bid to mislead public opinion."
International Atomic Energy Agency head Mohammed ElBaradei said Friday he was calling for a timeout regarding the Iranian nuclear issue, hoping that talks on the matter can resume.
British Prime Minister Tony Blair launched plans Monday for a new multibillion-dollar submarine-based nuclear missile defense system, warning lawmakers the future may hold perilous threats from rogue regimes and state-sponsored terrorists. The replacement fleet would cost around £20 billion.
After walking away from the negotiating table nearly a year ago, North Korea has agreed to return to six-party talks on its nuclear weapons program.
Iran has resumed its uranium enrichment program by building a second cascade of centrifuges and injecting gas into the system over the past few weeks despite threats of U.N. sanctions over its nuclear program, Iran's semi-official news agency ISNA reported on Friday.
European members of the U.N. Security Council have proposed sanctions that would target Iran's nuclear and ballistic missile program, including a ban on the sale of technology and material related to those programs and a freeze of financial assets of officials involved in those programs.
The U.S. diplomatic envoy to Asia lauded nations for their support for U.N. sanctions against North Korea during U.S. Secretary of State Condoleezza Rice's trip to the region.
U.S. Secretary of State Condoleezza Rice has said that a high-ranking Chinese envoy, who met earlier with North Korean leader Kim Jong Il, did not say that Pyongyang would refrain from conducting further nuclear tests.
U.S. Secretary of State Condoleezza Rice said Saturday that a high-ranking Chinese envoy, who met earlier with North Korean leader Kim Jong Il, did not say that Pyongyang would refrain from conducting further nuclear tests.
Mixed messages are emerging from North Korea over its nuclear test program.
North Korean leader Kim Jong Il told a visiting Chinese delegation that the communist nation was not planning a second nuclear weapons test, a South Korean news agency reported Friday.
U.S. Secretary of State Condoleezza Rice met with Japanese leaders Wednesday as the world awaited a possible second nuclear test by North Korea.
North Korea may be preparing to conduct a second nuclear test, a U.S. official with access to intelligence information said Tuesday.
U.S. Secretary of State Condoleezza Rice said the U.N. resolution imposing sanctions on North Korea was a "clear message" that Pyongyang must "make a new set of calculations" about its nuclear endeavors.
The United States is maintaining diplomatic pressure on China to help enforce U.N. sanctions on North Korea for its claimed nuclear test.
The U.N. Security Council voted unanimously Saturday to slap North Korea with trade, travel and other sanctions as punishment for its claimed nuclear weapons test.
North Korea's purported test of a nuclear device has set off alarms around the world, sparking intense diplomatic efforts and concerns of a regional arms race and terrorism repercussions.
All Japanese ports will be closed to North Korean vessels, according to new sanctions approved Friday by the Japanese Cabinet in response to the North's claimed nuclear test this week.
President Bush held a news conference in the Rose Garden of the White House on Wednesday, addressing topics including North Korea, Iraq and the Foley scandal. Here is a full transcript of his opening comments and a question-and-answer session.
Concern of a second nuclear test by North Korea fueled growing tensions across the Asia Pacific region Wednesday.
The U.S. ambassador to the United Nations is expected on Thursday to propose to the organization's security council a resolution that would punish North Korea for its reported nuclear test, an action bound to draw strong opposition from China.
U.S. Secretary of State Condoleezza Rice on Tuesday defended the Bush administration's refusal to hold bilateral talks with North Korea in the face of Pyongyang's claim of a successful nuclear test.
North Korea has claimed a successful nuclear test despite pressure from the international community for the country to abandon its nuclear program.
Papers around the world have strongly criticized North Korea's nuclear weapons test.
The United States believes North Korea attempted to detonate a nuclear device but that "something went wrong," and the blast was relatively small, a U.S. government official said Tuesday.
President Bush on Monday denounced a reported North Korean nuclear test as provocative, "unacceptable" and a threat to global peace and security.
North Korea has claimed a successful nuclear test despite pressure from the international community for the country to abandon its nuclear program.
North Korea claimed it conducted a successful underground nuclear test Monday, according to the country's official Korean Central News Agency (KCNA).
The United States has vowed to press for tough international sanctions against North Korea over its claimed nuclear test, while scientists have raised questions about whether the test was a success.
North Korea's official news agency reported that the United States is conducting a "reorganization" of its forces in South Korea in preparation for a "war of aggression" just days after North Korea announced that it would test a nuclear weapon.
Foreign ministers seeking to defuse the crisis over Iran's nuclear ambitions agreed Friday to consult on possible U.N. sanctions, expressing disappointment at Tehran's refusal to suspend uranium enrichment.
Japan's top government spokesman says Tokyo is stepping up monitoring of North Korea amid speculation that the communist nation could carry out a nuclear test as early as this weekend.
United Nations Security Council members have reached a tentative agreement on a Japanese-drafted statement that warns North Korea of unspecified consequences if it conducts a nuclear test.

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