Ellie Cook is a Newsweek security and defense reporter based in London, U.K. Her work focuses largely on the Russia-Ukraine war, the U.S. military, weapons systems and emerging technology.

Engineers from the UK have made significant progress in using the stratosphere for surveillance and communication purposes with the completion of a series of trials with the PHASA-35, an uncrewed ...

Engineers prepare the PHASA-35 for a flight test. BAE Systems is building two more development aircraft, which it intends to fly from 2025. (BAE Systems) BAE Systems is building additional ...