title: Russia tells North Korea, U.S. 'hot heads' to calm down
text: UNITED NATIONS (Reuters) - Russia s foreign minister said on Friday the leaders of North Korea and the United States should tone down their bellicose rhetoric and warned that a collapse of a nuclear deal between Iran and world powers would only embolden Pyongyang.  The exchange of threats is quite bad, unacceptable,  Sergei Lavrov told reporters at a news conference.  We have to calm down the hot heads,  Lavrov said, adding that he was convinced a Russian-Chinese proposal could still pave the way for a diplomatic solution to the North Korea crisis. Lavrov added that a collapse of the Iran nuclear deal would give North Korea little incentive to drop its nuclear program in return for sanctions relief.  