Videos alleging the U.S. and Canada could go to war amassed millions of views on TikTok, but retired military leaders disagree.

Alarmed that U.S. security priorities lie elsewhere, a group of European countries has been working on a plan to send troops into Ukraine to enforce any peace settlement.

John Malcolm Thorpe Fleming Churchill was born in Hong Kong, and graduated from the Royal Military Academy at Sandhurst in 1926. He would later earn the nickname “Mad Jack” or “Fighting Jack” for ...