The widow of former Russian security-service officer Aleksandr Litvinenko has said accusations that her slain husband was a British spy were part of a "KGB model" campaign.

Foreign Minister of Russia Sergey Lavrov said that Britain tried to politicize the investigation into the death of former Russian spy Alexander Litvinenko, warning it would strain relations between Russia and the U.K.

British prosecutor's chief suspect in the case of killing Aleksandr Litvinenko said Thursday he had evidence that the British intelligence services had a hand in the slaying - tit will likely further damage relations between Moscow and London.

The chief suspect in the murder of former Russian intelligence officer Aleksandr Litvinenko has said British secret services were behind Litvenenko's murder last year. Andrei Lugovoi also said Litvinenko was a British spy and that MI6 had tried to recruit him as a spy, too.

Britain has asked Russia to extradite the man suspected of poisoning former Russian intelligence officer Aleksandr Litvinenko. Britain's ambassador to Moscow, Anthony Brenton, told reporters in St. Petersburg today that he has handed Russian authorities an official request for the extradition of Andrei Lugovoi.

A Russian wanted in Britain on charges of murdering Kremlin critic Aleksandr Litvinenko has said that he does not rule out handing himself over to the British Embassy in Moscow.

British Prime Minister Tony Blair leaves office on June 27. In this report from Washington, Senior Correspondent André de Nesnera looks at Mr. Blair's legacy in foreign affairs, a legacy largely defined by his support of the war in Iraq.

Russia said on Friday that it would consider prosecuting the chief suspect in the radiation poisoning of a former Moscow intelligence agent Alexander Litvinenko in London, but Britain rejected the offer.

Tony Blair said Wednesday Britain must look at a new generation of nuclear power stations to guarantee its future energy supplies. Blair reopened the debate over nuclear power in an opinion piece in The Times newspaper before the publication of a new government energy strategy report on Wednesday. The report is expected to also encourage wind and solar power.

Tony Blair said Wednesday that he would handle negotiations at next month's European summit and declined to say if his successor would be part of Britain delegation. The EU stalled constitution will be among subjects.

Britain's foreign secretary said Tuesday that Japan ant the UK should lead the global fight against climate change. Foreign Secretary Margaret Beckett also urged Japan to overcome fears of economic competition from China and help its neighbor with technology and other aid to boost that country's energy efficiency.

British prosecutors have recommended that criminal charges be brought against a Russian citizen for the poisoning of former Russian intelligence officer Aleksandr Litvinenko. The announcement could further damage ties between Britain and Russia, already strained by the politically charged case.