Putin warns risk of clash with U.S ‘high’ over Ukraine | Third-world war imminent?

Russia's ambassador to the United States Anatoly Antonov compared the state of US-Russia relations to an "ice age", and said that the risk of a clash between the two countries was "high", Russian state-owned news agency TASS reported. He added that it was hard to say when talks on strategic dialogue between the two sides could resume, but that talks on prisoner swaps had been "effective" and would continue. Watch this video for more.