CAMBRIDGE, England – His indomitable will steeled by a dozen years in the Soviet gulag, decades of sparring with the K.G.B. and a bout of near fatal heart disease, Vladimir K. Bukovsky, a tireless opponent of Soviet leaders and President Vladimir V. Putin of Russia, is not a man easily put off his stride.
But he got knocked sideways when British police officers banged on the front door of his home on a sedate suburban street here early one morning while he lay sick in bed and informed him that they had “received information about forbidden images” in his possession.
