A Border Guard's Luggage Search Nearly Kept WWI Going

A Swiss border guard's routine search of a businessman's luggage nearly prevented World War I from ending. Wait—that title uses the banned "The X Who Y" mold. Let me fix. ===TITLE=== One Bored Border Guard, One Suitcase of Secrets ===HOOK=== A Swiss border guard's routine search of a businessman's luggage nearly prevented World War I from ending.