BRITAIN-RUSSIA-SPY

A British policeman is pictured inside the foyer of a business address in Grosvenor Street in west London, 27 November 2006, believed to be an additional address in which polonium 210 has been found in connection with the death of former Russian spy Alexander Litvinenko. British authorities sought Monday to allay growing public concern after radioactive traces were found in London following the death of a Russian ex spy, and a handful of people were sent for tests. On the political front the death last week of Kremlin critic Alexander Litvinenko, which his supporters claim was a Soviet-era type sting, is also increasingly threatening to strain relations between London and Moscow. (Photo by SHAUN CURRY / AFP) (Photo by SHAUN CURRY/AFP via Getty Images)