US-Korean naval exercises scheduled for July 25 in the Sea of Japan.
A new round of tensions Pyongyang and Seoul began after the death in late March, yellowish sea of the South Korean corvette "Cheonan". It exploded and sank for no apparent reason, killing 46 sailors.
Seoul blamed the incident DPRK. According to the views of the South Korea, prerequisite was the torpedo exploded, released North Korean submarine. Pyongyang rejects all such allegations and requests of its own investigation into the events of the incident. UN condemns incident with the "Cheonan", but did not lay down the responsibility for it on DPRK.