Traffic ground to a halt at one of France’s busiest train stations on Friday after an unexploded World War II bomb was uncovered just north of Paris, the authorities said. The bomb was discovered overnight in the Saint-Denis suburb near…

Traffic ground to a halt at one of France’s busiest train stations on Friday after an unexploded World War II bomb was uncovered just north of Paris, the authorities said. The bomb was discovered overnight in the Saint-Denis suburb near…