The missile deployments come months after Iran’s Supreme Leader, Ayatollah Khamenei, urged officials to “master artificial ...

Such defense systems are extremely costly” with “their effectiveness often being questionable,” one expert said.

The United States is estimated to have spent more than $400 billion on the kinds of antimissile goals that the president now ...

President Trump on Monday night signed an executive order to create a next-generation missile defense shield, which the White ...

Ukraine targets Russian oil refinery and energy infrastructure in a major drone attack as Putin rejects direct peace talks ...

Bulletin issues 'warning to all world leaders' that cites 'nuclear risk, climate change' and misuse of technologies, ...

North Korean leader Kim Jong Un called for "indefinitely" strengthening his regime's nuclear weapons capacity, state media ...

Iran acquiring Russian Su-35 fighter jets would mark a major upgrade of its air force without changing the regional balance of power, analysts believe. A senior Iranian military official told state ...

Iran’s purchase of the Su-35 shows its desperation to demonstrate an ability to deter further Israeli airstrikes.

Seventy-eight years ago, scientists created a unique sort of timepiece — named the Doomsday Clock — as a symbolic attempt to ...