It presents a threat not only to our friends, but ultimately a threat to us to have Iran have nuclear material, nuclear weapons that could be used against us or used to be threatening to us.
"The Agency is unable to provide credible assurance about the absence of undeclared nuclear material and activities in Iran, and therefore to conclude that all nuclear material in Iran is in peaceful activities, " the IAEA concluded.
The President outlined with President Sarkozy and Prime Minister Brown at the G20 an effort by the Iranians to go around the IAEA in a clandestine effort that many presumed was to create nuclear material for a nuclear weapon.
North Korea revealed a uranium-enrichment facility at the plant in 2010, another route to provide fissile material for nuclear weapons.
North Korea was accumulating material for nuclear weapons when I became president.
This scuppered a deal to freeze and dismantle the North's own plutonium-rich reactors, which outsiders feared could provide the raw material for nuclear bombs.
The American administration wants agreement from North Korea to inspections by the International Atomic Energy Agency of sites where it is suspected of keeping material for nuclear weapons.
It also expelled the weapons inspectors who were monitoring its plutonium-laden spent fuel rods and a reactor capable of producing more that can be reprocessed into fissile material for nuclear bombs.
Before that some of Mr Kim's nuclear material had turned up in Libya, via the nuclear black market, before that country handed in all its bomb-making paraphernalia.
Announcement Fulfills Bush Unilateral Disarmament Gameplan (No. 93-D 17, 8 March 1993), which describes how the failure to provide for future sources of the special nuclear material tritium will render all U.S. nuclear weapons ineffectual early in the next century.
Iran told the agency that no nuclear material had been introduced into the plant, and enrichment levels would only be high enough to make nuclear fuel, not a bomb.
And as you know, the President has outlined a plan to get all loose nuclear material contained over a four-year period of time, and in April will host 43 nations in a nuclear security summit in order to make sure that those promises are made real.
When inspectors found suspicious nuclear material at this site, the Iranians said it was just contamination.
That is more than enough time to divert nuclear material and make mischief with it.
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Some nuclear material was discovered in Libya several years ago of possible North Korean origin.
He said multiple mechanisms existed to prevent the theft or loss of nuclear material.
Food inspectors, air-traffic controllers, specialists who track down loose nuclear material wouldn't get their paychecks.
Looting has raised concern that nuclear material could end up in the hands of terrorists.
There was a lot of loose nuclear material that was vulnerable to potential smugglers, to potential infiltration.
Watching the Japanese suffer repeated wounds from the release of nuclear material is gut wrenching, especially considering their history.
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Among its endeavors, the agency tries to verify that countries correctly and completely account for their nuclear material and activities.
And we're going to get the job of containing all of that nuclear material in Russia done in four years.
It has verified that none of the nuclear material that Iran has already declared has been diverted for a weapons programme.
And chemists who understand how plutonium ages also develop forensics to track missing nuclear material and catch those trafficking in it.
However, Iran is not providing the necessary cooperation to enable us to provide credible assurance about the absence of undeclared nuclear material and activities.
Iran says it has begun operations at two uranium mines and a uranium ore processing plant, furthering its capacity to produce nuclear material.
Senator Kennedy also revisited the infamous (and somewhat irrelevant) question of whether Saddam Hussein was pursuing the acquisition of nuclear material from Africa.
Although Pyongyang has given up parts of its nuclear programme in return for aid, it has continued to develop missiles and enrich nuclear material.
In April, the President will also host a Nuclear Security Summit to advance his goal of securing all vulnerable nuclear material within four years.
In the absence of new production, old weapons must be repaired and upgraded, often using nuclear material recovered from weapons that are being retired.
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