. >> alexander litvinenko was poisoned by radiation. he was a fierce critic of the kremlin. where they behind his death? a lawyer for his widow said it was vital to establish whether this was a targeted assassination by agents of a foreign state. this would be an active state- sponsored nuclear terrorism on the streets of london. do you believe that the russian state was behind the murder? >> . now, i believe it. they say that polonium was used at such a high level of radioactive material. you cannot find it anywhere because it is all under state control. >> in 2006, police followed a radioactive trail across flooded. they found traces of polonium at a restaurant where he ate, also at the millenium hotel. it was here at the pine bark at the millenium hotel that alexander litvinenko drank tea with some russian visitors. that is the moment that the authorities believe that the poison was used. they follow the trail back to moscow. they have enough evidence to charge two men. one of them, this former security officer. they have both denied involvement and remain in russia. brit

russia says it expects a probe into the murder of former security service officer alexander litvinenko to be comprehensive hearings have resumed in british courts almost six years after he was allegedly murdered by radiation poisoning in london so first got the story. there's been nearly sixty years since alexander in yankees death and today at a pre inquest review held here in london we heard from the assistant deputy coroner . who apologized and said that there would be no. delay now the inquest through the held today was to set the parameters ahead of the full inquest which is next year just to give you some background to remind you about the details of the case alexander litvinenko died in november two thousand and six after being poisoned with polonium tea ten now the original investigation found that he had tea with two russians in a central london hotel one of him was identified as andre a little boy now at the time of that original investigation we saw a serious souring of relations between moscow and london after the crown prosecution service asked. the boy to be extradited fo