Russian Foreign Minister Sergei Lavrov harshly criticises military activity near North Korea, warning on Friday the situation may slip out of control.<br /> <br />Lavrov implicitly criticised provocative U.S. bomber flights over South Korea that came after threats from Pyongyang.<br /> <br />He also said North Korea should cool down too, calling on "all sides not to flex their military muscle."<br /> <br />North Korean media released photos of leader Kim Jong-un on Friday presiding over an emergency military meeting, where he put missile units on standby to attack U.S. bases in South Korea and the Pacific.<br /> <br />North's state-run television KRT broadcast a video of Kim attending a mass meeting with members of the army on Thursday.<br /> <br />The United States flew two nuclear-capable stealth bombers over the Korean peninsula from the U.S. and back, designed to show America's ability to conduct precision strikes.<br /> <br />Tension has been high since North Korea conducted a third nuclear weapons test in February
