The news broke last Friday like a thunderclap: Russia has been feeding Iran the precise locations of U.S. warships and aircraft — real-time, actionable intelligence used to kill Americans. Six U.S. service members are already dead in Kuwait, struck by an Iranian drone. The CIA’s station in Riyadh was hit, killing another. According to officials who spoke to the Washington Post, Moscow’s assistance has been described as “a pretty comprehensive effort.”

This is not a Cold War chess match or a diplomatic spat. This is Russia helping to murder American soldiers, and we should be furious.