Oleg Kalugin headed KGB operations in the United States in the 1970s . He later left Russia to live in America , . Kalugin says he is `` amazed '' at Moscow 's alleged heavy espionage in U.S. Kalugin : U.S. `` used to be enemy No . 1 for the KGB ... but now it has become a friend of mine and I am very proud that we have been able to work together so well on this issue.
Oleg Kalugin headed KGB operations in the United States in the 1970s . He later left Russia to live in America , . Kalugin says he is `` amazed '' at Moscow 's alleged heavy espionage in U.S. Kalugin : U.S. `` used to be enemy No . 1 for the KGB ... Now it is priority No . 1 ''