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.

This photo provided by the Bulgarian Government shows the first of 16 new F-16 fighter jets from the US landing in Bulgaria at Graf Ignatievo airbase Wednesday, April 2, 2025. (Bulgarian ...

Ukraine’s Air Force has received a new batch of F-16 fighter jets, President Volodymyr Zelenskyy announced Wednesday during a Zoom briefing for journalists. “Additional F-16s have arrived in ...