Western nations are concerned that Iran could use the missile technology to launch a nuclear weapon, which Iran is suspected of building.

VOA: special.2009.02.07

Last week,President Obama and Russian President Dmitri Medvedev signed a nuclear arms agreement in the Czech Republic.

VOA: special.2010.04.17

People can get cancer from low doses of ionizing radiation, the kind released in a nuclear accident.

VOA: special.2011.03.16

They increased economic actions against North Korea after it launched missiles and tested a nuclear device.

VOA: special.2009.08.08

The president said groups like al-Qaida would surely use a nuclear weapon if they got one.

VOA: special.2010.04.17

President Obama and Prime Minister Netanyahu both spoke of the threat of a nuclear-armed Iran.

VOA: special.2009.05.23

Dr.Giuseppe Esposito is a nuclear medicine expert at Georgetown University Medical Center in Washington.

VOA: special.2011.03.02

Other wishes included working for a nuclear-free Korea and to defeat extremists in Afghanistan.

VOA: special.2009.09.05

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

"If Iran were to acquire nuclear weapons, it could give a nuclear umbrella to terrorists, or worse it could actually give terrorists nuclear weapons, and that would put us all in grave peril."

VOA: special.2009.05.23

"I firmly believe it is in Iran's interest not to develop nuclear weapons, because it would trigger a nuclear arms race in the Middle East and be profoundly destabilizing in all sorts of ways."

VOA: special.2009.05.23

A nuclear-free world is also U.S.President Barack Obama's vision - a vision he presented in April during a visit to Prague.

VOA: standard.2010.08.06

But this summer, after weeks of drought and wildfires, Olga Kubysheva says it feels like living next to a nuclear reactor.

VOA: standard.2010.08.10

And we remain committed to doing all we can to try to prevent Iran from becoming a nuclear weapons power.

VOA: standard.2009.06.29

While denying any intention to build atomic weapons, Iran is actively pursuing a nuclear program and upgrading its missile technology.

VOA: standard.2010.04.11

North Korea on Monday exploded a nuclear device and tested a series of missiles in defiance of the international community.

VOA: standard.2009.05.30

The Russian leader also praised U.S.President Barack Obama's recent call for a nuclear-weapons-free world, calling it a "beautiful and right goal."

VOA: standard.2009.12.25

Iran says the program is for peaceful purposes , but western nations fear Tehran is trying to build a nuclear bomb.

VOA: standard.2009.10.21