One of his areas of specialty at the State Department was North Korea's nuclear program.
Iran has denied pursuing nuclear weapons and insists the country's nuclear program is for peaceful purposes.
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In many cases, the politicians didn't even know how far developed the nuclear program was.
Tehran says its nuclear program is for peaceful, power generating purposes, not for weapons.
Those mainly target trade and assets of people thought to be tied to the nuclear program.
's International Atomic Energy Agency issues a report on Friday about the nuclear program in Iran.
Moscow is hosting the latest round of international talks aimed at containing Iran's nuclear program.
The so-called six-party talks on North Korea's nuclear program had come to a standstill.
The Obama administration is growing increasingly alarmed by the advances in North Korea's nuclear program.
The U.S. and Iran are at loggerheads, if you will, over Iran's nuclear program.
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U.S. officials acknowledge that North Korea's nuclear program is now far more advanced than Tehran's.
We hope Iran will engage in constructive negotiations over the future of its nuclear program.
Security Council has imposed a third round of sanctions on Iran for its nuclear program.
We also had the opportunity to discuss the issue of Iran and its nuclear program.
But he warned that threats would not work in solving the dispute over Iran's nuclear program.
The Iranian nuclear program has undertaken -- has undergone a series of problems throughout the year.
The drop appeared to be the result of cooling tensions over Iran's nuclear program.
He spoke also about the ongoing international commitment to hold Iran accountable on its nuclear program.
The biggest disagreement between the U.S. and India is over the latter's nuclear program.
Each expert CNN spoke with pointed out that Iran has a nuclear program.
Many Indians see the country's nuclear program as key to asserting its influence on world affairs.
Now its nuclear program is frozen under international supervision and eventually will be dismantled.
Then there was the self-professed "pro-Israel, pro-peace" group's panel discussion on Iran's nuclear program.
Two specific issues - aside from Iran's nuclear program - should be raised in this regard.
And as Blumenthal notes, the US needs Beijing's help in convincing North Korea to give up its nuclear program.
This is in the Middle East, in Iraq, with respect to the Iranian nuclear program.
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This turnaround has a great deal to do with regional jitters over Iran's nuclear program.
The U.S. and Russia are glossing over differences in the way they're dealing with Iran's nuclear program.
Israel, for one, is focusing on gathering international support to isolate Iran and curb its nuclear program.
Security Council may take to push Tehran to comply with U.N. demands over its nuclear program.
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