Existing legislation prevents Space Force from fully recouping indirect costs of launches, a new GAO report finds.

Former Deputy National Security Advisor Victoria Coates joins 'America's Newsroom' to discuss President Donald Trump's phone call with Putin as he continues to push for peace in Ukraine.

Security experts warn Pentagon's decision to withhold promised defense systems from Ukraine may embolden Russian President ...

The decision left officials on both sides of the Atlantic scrambling to find out how long the pause might last.

The appraisal that Iran’s nuclear hopes had been set back 1 to 2 years by U.S. and Israeli bombings was the latest in a ...

The Pentagon came under criticism Wednesday for its decision to halt sending air defense missiles to Ukraine, with lawmakers ...

The new assessment contrasted with U.N. agency view that Iran could resume enriching uranium in a “matter of months.” ...

The move "was made to put America’s interests first," a White House spokeswoman said, as U.S. munitions have been depleted in ...

The Pentagon is pausing shipments of weapons to Ukraine again after more than three years of deliveries meant to bolster the ...

Several experts have cautioned that Iran likely moved a stockpile of near weapons-grade highly enriched uranium out of the ...

The U.S. is halting some shipments of weapons to Ukraine amid concerns that its own stockpiles have declined too much.

Scientists were initially given less than a week to prepare for the loss of microwave observations that are key in detecting ...