▁and ▁Russia ▁for ▁more ▁than ▁ 1 5 ▁years ▁of ▁his ▁ 2 7 ▁years ▁with ▁the ▁Federal ▁Bureau ▁of ▁Investig ation . ▁He ▁passed ▁thousands ▁of ▁pages ▁of ▁class ified ▁documents ▁on ▁nuclear ▁war ▁def enses ▁and ▁S ens itive ▁Com partment ed ▁Information ▁and ▁exposed ▁three ▁Russian ▁agents ▁of ▁the ▁United ▁States , ▁two ▁of ▁whom ▁were ▁tried ▁and ▁executed . ▁He ▁ple aded ▁guilty ▁to ▁esp ion age ▁and ▁was ▁sent enced ▁to ▁life ▁in ▁prison . ▁ ▁June ▁ 2 0 1 0 : ▁With ▁the ▁break up ▁of ▁known ▁parts ▁of ▁the ▁Il leg als ▁Program , ▁ 1 0 ▁individuals ▁who ▁alleg edly ▁carried ▁on ▁deep - cover ▁esp ion age ▁activities ▁were ▁arrested ▁by ▁F BI , ▁and ▁an ▁ele vent h ▁was ▁arrested ▁while ▁attempting ▁to ▁trans it ▁through ▁Cy pr us . ▁ ▁These ▁individuals ▁were ▁pur port edly ▁working ▁for ▁the ▁SV R ▁on ▁long ▁term ▁cover t ▁assign ments ▁in ▁pen etr ating ▁policy ▁making ▁circles ▁in ▁the ▁United ▁States ▁government . ▁ ▁An ▁agent ▁going ▁by ▁the ▁name ▁of ▁Christopher ▁M ets os ▁is ▁still ▁being ▁sought ▁by ▁the ▁authorities ; ▁the ▁agents ▁arrested ▁on ▁ 2 8 ▁June ▁ 2 0 1 0 ▁include ▁Mik h ail ▁Sem en ko , ▁Vladimir ▁G ury ev , ▁L idi ya ▁G ury ev , ▁And rey ▁Bez ru kov , ▁Y el ena ▁V av il ova , ▁Mik h ail ▁K uts ik , ▁Natal i ya ▁Pere ver ze