U.S. ties missile mix-up to reduced nuclear focus
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The Air Force mistakenly flew nuclear weapons across the United States last year as a result of eroding discipline spawned by a diminished strategic focus on nuclear weapons, officials said on Tuesday.
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Moving to quell tensions with the United States, the head of the U.N nuclear watchdog agency said Friday his recent comments on the invasion of Iraq were misinterpreted, and he had a "close working relationship" with the American administration.
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A number of top U.S-based physicists have concluded the United States used inaccurate claims to reassure NATO allies about U.S. missile defense plans in Eastern Europe
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The looming U.S. Navy attempt to shoot down a dying satellite could demonstrate an anti-satellite capability for its missile defense system.
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The Defense Department is displaying a "precipitous decrease in attention" to the security and control of the U.S. nuclear arsenal, according to a Defense Science Board task force that examined the broader causes behind the U.S. flight in August of a B-52 bomber that inadvertently carried six cru...
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The United States on Friday defended its charges that Iran was working to fit a missile with a nuclear warhead and dismissed doubts about the reliability of its intelligence on the Islamic republic.
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The United States has had some  success in limiting North Korea's export of missiles by  persuading other countries not to buy them, a senior  administration official says.
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The United States has reassured Poland it is taking steps to cooperate more with Russia and NATO on plans to set up a missile defense system in eastern Europe, a top U.S. diplomat said Thursday.
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The United States and South Korea have played down suggestions that a massive explosion in North Korea last week was caused by a nuclear device.
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President Vladimir Putin said on Thursday the United States was seeking ways to resolve differences over a planned missile shield, but warned Russia could re-deploy weapons if Moscow's concerns were not heeded.
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The Army has been using a new weapon that combines software with imagery beamed from satellites to make missions somewhat less unpredictable.
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Cockup rather than conspiracy at NRO In an expensive technical mishap, a brace of top-secret American spy satellites was fired into incorrect orbits last Friday.â¦
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Â· President tells of new generation of weaponsÂ· 'Grandiose' plan to combat US missile shield
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U.S. and Russian officials changed the International Space Station's orbit to keep it clear of debris from a satellite destroyed by China, a report says.
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An important test of the United States' fledgling missile defense system ended in failure early Wednesday, the Pentagon said.
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The United States scrapped on Friday a key test of an emerging missile-defense shield after a dummy missile that was to have been the system's target went astray over the Pacific.
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The United States today played down concerns raised by the UN atomic watchdog about equipment and materials that could be used to make nuclear weapons reported missing from Iraq, saying the problem had been addressed.