Tehran has not,as yet, agreed to the terms of a UN-draft deal to trade for highly enriched uranium from France and Russia.

VOA: standard.2009.12.18

"With the highly enriched uranium you are still dealing with three to five years to create a weapon."

VOA: standard.2010.04.14

Until this year, Pyongyang has denied U.S.accusations it possessed a covert HEU, or highly enriched uranium program, in violation of previous agreements.

VOA: standard.2009.09.06

An Iranian official told the Reuters news agency that Tehran would produce the highly enriched uranium at home if the Vienna talks fail.

VOA: standard.2009.10.19

"But the hitch is now news coming out of Tehran, which suggests they may be actually looking to purchase at more highly enriched levels up to 20 percent.

VOA: standard.2009.10.19

The number-two military man at the Pentagon, General James Cartwright, said it would probably take several more years for Iran to take that highly enriched uranium and develop a usable weapon.

VOA: standard.2010.04.14

The IAEA draft deal calls for Iran to ship its stockpile of low-grade enriched uranium to Russia to be transformed into more highly enriched uranium for use in Tehran's medical research reactor.

VOA: standard.2009.10.28

Several Iranian politicians close to Supreme Leader Ayatollah Ali Khamenei have demanded Tehran ship only part of its enriched-uranium stockpile abroad until some of the batch shipped to Russia was returned in more highly enriched form.

VOA: standard.2009.10.28

In Washington, a military intelligence official told a Senate committee that Iran could be one year away from producing enough highly-enriched uranium for a nuclear weapon.

VOA: special.2010.04.17

Lieutenant General Ronald Burgess response this question from Levin, "With the installed centrifuges that they have, how long would it take,approximately, to produce enough highly-enriched uranium for one nuclear weapon?"

VOA: standard.2010.04.14