Kammala wannan magana: Bisa ga littafin, FSB ta karbi umarni kai tsaye daga shugaban Rasha Vladimir Putin don kashe Alexander Litvinenko, kuma yana da hannu a cikin
Hare-haren bam a gidajen 1999, rikicin 'yan gudun hijirar gidan wasan kwaikwayo na Moscow da kisan Anna Politkovskaya.