The Russian prime minister appeared to be greeted by a chorus of boos as he stepped into the ring at Olimpisky stadium in Moscow after a martial arts fight. There were jeers as Putin, a judo black belt who performs macho stunts to buoy his popularity, gave a short speech congratulating Russian Fedor Emelianenko for beating American Jeff Monson. Putin’s supporters said the catcalls were not a sign of dissent but came from beer-guzzling fight fans expressing their need to get to the toilets