During the Cold War, scientists developed a controversial nuclear weapon designed to change how nuclear warfare worked. The neutron bomb minimized blast damage while maximizing lethal neutron ...

NPR's Leila Fadel asks Iran expert Ali Vaez of the International Crisis Group about Iran's nuclear capabilities before and after U.S. and Israeli attacks.

Iran is extremely unlikely to produce functional nuclear bombs in the current environment—and certainly not quickly. The disruptions from Israeli and U.S. operations (including the ongoing strikes), ...

President Donald Trump has claimed that the 2015 Iran nuclear deal was "a road to a nuclear weapon" and the country "would be ...

Officials from the United States and several other countries said in September that Parchin may be a site where Iran was ...