By Gram Slattery, Jonathan Landay and Erin Banco WASHINGTON, May 4 (Reuters) - U.S. intelligence assessments indicate that the time Iran would need to build a nuclear weapon has not changed since last summer,

The U.S. Director of the National Intelligence contradicted one of Trump's key justifications for going to war against Iran.

China’s nuclear weapons capabilities are small compared to that of Russia and the U.S. However, China has been expanding its nuclear arsenal under the leadership of Xi Jinping, doubling in size in just the last decade.

President Trump said one of the major reasons he went to war was to deny Iran the ability to develop nuclear weapons, and a new report claims Iran’s nuclear program hasn’t changed since the war began.

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the Monitor because it sees good journalism as vital to ...

The United States and Iran have clashed over Tehran’s nuclear program as a review of the treaty meant to prevent the spread of atomic weapons got underway at the United Nations.

The next generation of nuclear energy technology could be taking shape in Pocatello after Idaho State University and NuCube Energy were selected for the Nuclear Energy Launch Pad

We're now going to hear about Iran's nuclear program. It was curtailed and open to U.N. inspections in exchange for sanctions relief during the Obama era. President Trump pulled the U.S. out of the deal during his first term, and today, Iran is estimated ...

President Donald Trump said Iran has agreed to suspend its nuclear program indefinitely, fueling optimism that a deal to end their war is in reach after Tehran announced the Strait of Hormuz was open again.