US says Korea war games must go on

North Korea has vowed “merciless retaliation”, but senior US commanders are pressing ahead with their joint military exercises with South Korea, saying it’s vital to maintain readiness in the face of Pyongyang’s aggression. At a time when hostility between the two countries has risen to worrying levels, there have been calls to postpone or modify the drills. But US military chiefs say the war games must go on until they “have reason not to”.