Russian President Vladimir Putin has used crude language in a furious new attack on Turkey over the shooting down of a Russian combat jet last month. "The Turks", he said, had "decided to lick the Americans in a certain place". He was giving his wide-ranging annual news conference. Touching on next year's US presidential election, the Russian leader called Donald Trump a "very colourful, talented person" and the "absolute frontrunner in the presidential race". Mr Putin is now into his third term as president since 2000, battling an economic crisis. Critics say civil liberties have been steadily eroded under his rule. He remains one of the world's most recognisable politicians, and has topped the list of The World's Most Powerful People compiled by Forbes magazine for the third year running.