SKorea and U.S air forces hold joint aerial drills

South Korea's air force released details of a five-day joint aerial drill with the United States hours after North Korea claimed it had tested a nuclear-capable underwater drone designed to generate a gigantic “radioactive tsunami” that would destroy naval strike groups and ports.

The five-day joint drill with the United States began Monday and concluded Friday above waters off South Korea's western coast and included live-fire demonstrations of air-to-air and air-to-ground weapons. The air force said the exercise, which involved various South Korean fighter jets and at least one U.S. A-10 attack plane, was aimed at verifying precision strike capabilities and reaffirming the credibility of Seoul’s “three-axis” strategy.