Vehicle traffic on the single bridge that links Russia to Moscow-annexed Crimea and serves as a key supply route for the Kremlin’s forces in the war with Ukraine came to a standstill Monday after one of its sections was blown up, killing a married couple and wounding their daughter. Rail traffic across the 19-kilometer (12-mile) Kerch Bridge also stopped but resumed after about six hours. The strike was carried out by two Ukrainian sea drones, Russia’s National Anti-Terrorist Committee said. Ukrainian officials were coy about taking responsibility, as they have been in past strikes.