Experts say reviving the long-dormant testing program could take at least a year and would cost astronomical amounts for each ...

Touting new weapons tests, Moscow signals to Washington that it must contend with the Kremlin’s power and negotiate.

President Trump’s post raises technical questions about how and if the United States could “immediately” return to nuclear ...

Finnish President Alexander Stubb on Monday said that "a new era of nuclear weapons" had begun, after the United States last week announced it planned new nuclear weapons tests.