Japan-South Korea defense drill unlikely to take place this month

South Korea has informed Japan of its intention not to conduct a planned joint search-and-rescue drill this month, sources in Japan’s government and ruling coalition said Tuesday.

The drill had been arranged between the Maritime Self-Defense Force (MSDF) and the South Korean Navy. Some observers say the South Korean move may be apparent retaliation for the Japanese side’s recent cancellation of refueling for aircraft from the South Korean Air Force.

Concern is rising that defense exchanges between Tokyo and Seoul may be stalled again.