two were detained after a protest at a Dmitry Medvedev oil platform in Arctic . Greenpeace says 30 activists tried to hang a banner from a rig . Russia : ( CNN ) -- The action endangered lives , and could have led to an environmental disaster . The activists are `` accused of an imaginary offense , '' a Shell official says .
two were detained after a protest at a Dmitry Medvedev oil platform in Arctic . Greenpeace says 30 activists tried to hang a banner from a rig . Russia : The action endangered lives , and could have led to an environmental disaster . The activists are `` accused of an imaginary offense , '' a Shell official says .