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.

Russia can "collapse NATO" and inflict "humiliation" on the UK by making one strategic move, a leading member of the Defence Select Committee has warned. Mike Martin MP, who is also on the ...

His focus is Russia and Ukraine ... base following a series of NATO exercises to test alliance readiness to the threat posed by Russia, as a Newsweek map shows the strategic Arctic region where ...