Russia’s foreign minister on Saturday warned the U.S., South Korea and Japan against forming a security partnership targeting North Korea as

South Korea, Japan and the United States conducted a joint air drill on Friday involving a U.S. B-52 strategic bomber and fighter jets of the three allies over international waters, the South's defence ministry said.

Seoul: South Korea, the United States and Japan held combined air drills on Friday as part of efforts to strengthen their regional deterrence.