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.

The winner of the 32nd annual Martha's Vineyard All School Spelling Bee is fifth-grader Juliet Merrill from the Edgartown School and the winning word was jalapeño. On Friday, the middle school ...