North Korea fired two short-range ballistic missiles toward its eastern waters on Sunday, the latest in the country's barrage of weapons tests, and a day after it warned the redeployment of a U.S. aircraft carrier near the Korean Peninsula was inflaming regional tensions. South Korea's Joint Chiefs of Staff said in a statement that it detected two missile launches Sunday between 1:48 a.m. and 1:58 a.m. from the North's eastern coastal city of Munchon. It added that South Korea's military has boosted its surveillance posture and maintains a readiness in close coordination with the United States. Japanese Vice Defense Minister Toshiro Ino also confirmed the launches, saying Pyongyang's testing activities are "absolutely unacceptable" as they threaten regional and international peace and security. Ino said the weapons could be submarine-launched ballistic missiles. "We are continuing to analyze details of the missiles, including a possibility that they might have been launched from the se