Russia rejects British extradition request: Interfax
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Russia has sent Britain a letter  officially turning down a request to extradite the main suspect  in the murder of Russian emigre Alexander Litvinenko, Interfax  news agency said on Thursday.
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Britain rejected Russian allegations on Friday that it was politicizing the case of murdered Kremlin critic Alexander Litvinenko.
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Russia's foreign intelligence service issued a sharply worded denial on Wednesday of involvement in the poisoning of a fierce Kremlin critic and former spy who fell seriously ill in Britain, the Interfax news agency reported.
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Britain on Monday made an official request to Russia to extradite the man suspected of killing ex-KGB agent Alexander Litvinenko with radioactive polonium-210, deepening a rift between the former Cold War foes.
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A top election watchdog rejects Russian concessions for monitoring of the presidential election.
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Downing Street condemns Russian decision not to extradite businessman over Litvinenko killing.
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Moscow wants a Russian shipping tycoon currently living in Britain to be extradited back to Russia, The Guardian reported on Friday.
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Foreign Minister Sergei Lavrov Thursday said Russia refused to regard the London murder of a former Russian spy as a political matter and was treating it like a criminal case.
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Russia slammed the British investigation into the murder of ex-agent Alexander Litvinenko as biased on Monday, accusing London of &quot;conceit&quot; for suggesting changes to Russia&#39;s constitution.
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Britain has condemned Russia's refusal to extradite Andrei Lugovoi over the Litvinenko murder.
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British prosecutors seek extradition of a Russian suspect in the murder of an ex-KGB man.  But the Kremlin is balking
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Britain said on Tuesday that Russia&#39;s  refusal to extradite Andrei Lugovoy, the main suspect in the  murder of Russian emigre Alexander Litvinenko, was  &quot;unacceptable.&quot;
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Russia has formally refused to extradite ex-KGB agent Andrei Lugovoi, wanted by London over the murder of former agent Alexander Litvinenko, British prosecutors said Tuesday.
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LONDON/MOSCOW  - Britain accused Russia of "conduct not worthy of a great country" on Thursday after what it called a campaign of intimidation by security services forced its cultural centers in two Russian cities to halt operations.
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Russia expelled four British diplomats on Thursday and suspended cooperation with London on fighting terrorism, as a bitter row over Moscow's refusal to extradite a murder suspect escalated.
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British Prime Minister Gordon Brown criticized Russia on Friday for not extraditing the chief suspect in the London murder of former Russian security agent Alexander Litvinenko.
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The UK denies Interpol claims that it could be risking a terror attack by not checking a list of stolen passports.