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Last Updated: Wednesday, 18 July 2007, 14:18 GMT 15:18 UK
Time Line of recent Anglo-Russian relations
Oleg Gordievsky
Oleg Gordievsky was the highest ranking spy to defect
July 1985

Oleg Gordievsky is smuggled to Finland by British agents and becomes the highest-ranking KGB officer to defect to Britain.

September 1985

The USSR expels 25 British nationals in a tit-for-tat spy row, two days after the UK government orders the expulsion of 25 alleged Soviet spies.

November 1992

Vasily Mitrokhin, a KGB officer, defects to the UK after the USSR's collapse.

March 1996

Moscow expels nine British diplomats, alleging they are part of a spy ring.

May 1996

London expels four Russian diplomats.

Boris Berezovsky
Mr Berezovsky recently said he was warned of a murder plot
September 2003

UK refuses to extradite Russian oligarch Boris Berezovsky.

November 2003

The UK refuses to extradite ex-prime minister of the unrecognised Chechen Republic of Ichkeria, Ahmed Zakaev.

January 2006

Russia's state security service, the FSB, accuses British diplomats of spying in Moscow with the help of hi-tech electronic equipment disguised as rocks.

Alexander Litvinenko shortly before his death
Former KGB officer Alexander Litvinenko died of poisoning
November 2006

Former KGB officer Alexander Litvinenko dies in London.

February 2007

Boris Berezovsky tells the press that Andrei Lugovoi was responsible for the death of Mr Litvinenko.

April 2007

Russia formally renews its demand for the extradition of Boris Berezovsky from Britain following a newspaper interview where he refers to overthrowing the Russian government.

July 2007

Russia officially refuses a UK extradition request for Mr Lugovoi.

Foreign Secretary David Miliband
David Miliband announced the expulsions to Parliament
16 July, 2007

The UK government announces it is to expel four diplomats from the Russian embassy in London after Moscow's refusal.

17 July, 2007

Moscow warns the UK to expect "serious consequences" following the expulsion of its diplomats.

18 July, 2007

Russian billionaire Boris Berezovsky claims UK intelligence officers warned him a Russian hit man was going to kill him.

Live coverage from the House of Commons can be seen every sitting weekday on BBC Parliament and the BBC Parliament iPlayer.

Russian diplomats and 'parabolic' relations
18 Jul 07 |  BBC Parliament
Russia warns UK over expulsions
17 Jul 07 |  UK Politics
UK expels four Russian diplomats
16 Jul 07 |  UK Politics

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