Confusion on whether Iran truly needed only “two weeks to four weeks” to make a nuclear weapon, as President Donald Trump suggested on Monday, hangs over the ongoing U.S. and Israeli war on the ...

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 ...

When Iran’s covert nuclear program came to international attention over two decades ago, Tehran insisted that its intentions were peaceful and that it had no plans to develop nuclear weapons.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A nuclear bomb map created using a simulation tool shows the ...

When President Trump withdrew the United States from the Joint Comprehensive Plan of Action in 2018, he cracked the brittle foundation of the global nonproliferation regime based on the 1970 ...