Estonia's foreign minister has signaled the eastern NATO member was open to having nuclear weapons stationed on its soil.

The head of the U.N. nuclear watchdog agency says Iran's enriched uranium "is still there," as he stresses the urgency of ...

President Trump is pressuring Iran to either curtail its nuclear program or face military strikes, after Iran amassed a large ...

The Pentagon and the Energy Department have airlifted a small nuclear reactor from California to Utah, demonstrating what ...

U.S. negotiators are ready to hold another round of talks with Iran on Friday in Geneva if they receive a detailed Iranian ...

For the first time, the Pentagon and the Energy Department have airlifted a small nuclear reactor from California to Utah, demonstrating what they say is the potential to q ...

US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to ...

The United States and Iran will hold their next round of nuclear talks Thursday in Geneva, a facilitator said Sunday, as the Islamic Republic faces both the threat of a U.S. military strike and new ...

Tehran has denied it seeks nuclear weapons and said it was willing to accept some curbs in exchange for sanctions relief.

Trump said Iran's nuclear arms program is the main reason the U.S. may attack but some analysts say it could be something ...

The Pentagon and the Energy Department for the first time airlifted a small nuclear reactor from California to Utah, ...