<prompt> Ngwala tšwetšopele ya serapa se - Go ya ka puku, FSB e amogetše taelo e lebanyago go tšwa go Mopresidente wa Russia Vladimir Putin ya gore e bolaye Alexander Litvinenko, gomme e bile e na le letsogo go thuthupeng ga diphapoši ka 1999  <response>: , bothata bja go thopša ga batho bao ba lego kgolegong kua Moscow le polao ya Anna Politkovskaya. 