Russian FM Sergey Lavrov describes war of words between Washington and Pyongyang a 'kindergarten fight'. Russia's Foreign Minister Sergey Lavrov has urged "hot heads" to calm down, calling an escalating war of words between US President Donald Trump and North Korea's Kim Jong-un "a kindergarten fight". Trump called the North Korean leader a "madman" on Friday, a day after Kim dubbed him a "mentally deranged US dotard" who would face the "highest level of hard-line countermeasure in history" in retaliation for the US president saying Washington would "totally destroy" the Asian country if it threatened the US or its allies. Kim Jong-un calls Donald Trump 'deranged' "We have to calm down the hot heads," Lavrov told reporters at the United Nations on Friday, where world leaders gathered this week for the body's annual General Assembly. "We continu