"The joint aerial exercise involving South Korean, U.S. and Japanese Air Forces will consist of a formation flight with the B-52 escorted fighter jets from the three countries," a source familiar with the matter was quoted as saying by the agency.
The US nuclear-capable B-52 bomber, which was deployed in bilateral drills over the peninsula before, made its first landing at a South Korean airbase on Tuesday.
Last week, the nuclear-powered US aircraft carrier USS Ronald Reagan and its battle group arrived in South Korean largest seaport of Busan, prompting criticism from North Korea, which described the port call as a military provocation. The North argues that the buildup of nuclear assets on the peninsula is destabilizing the region.