Near the holiest ground in Islam, a drone was intercepted and destroyed by the Saudi-led coalition on Tuesday — a moment that distills years of grinding conflict into a single, charged instant. The Houthi movement, backed by Iran and hardened by a decade of war in Yemen, continues to press unmanned aircraft toward Saudi Arabia's most symbolically significant territory, testing both the kingdom's air defenses and the world's patience for a conflict without resolution. That such incursions have become routine speaks less to any single military outcome and more to the deeper failure of diplomacy