A video has emerged showing Russia's most wanted man, Doku Umarov, threatening an attack on the capital. The Chechen terrorist went on to promise "a year of tears and blood". Many now believe it's his way of claiming responsibility for the deadly terror attack on Domodedovo airport. 36 people were killed and more than a hundred injured in the blast at one of Moscow's busiest travel hubs almost two weeks ago.<br /><br />RT on Facebook: http://www.facebook.com/RTnews <br />RT on Twitter: http://twitter.com/RT_com
