RUSSIA and China warned the US not to risk military action against North Korea over its latest missile test.

The words of caution came as the US sent two B-1 strategic bombers and four of the new F-35 stealth fighters flying over South Korea in the latest muscle-flexing towards Pyongyang.

The provocative exercise was a direct response to North Korea’s test launch of a ballistic missile over Japan’s northern island of Hokkaido on Tuesday.