KGB (transliteration of "???") is the Russian abbreviation for Committee for State Security (; Komityet Gosudarstvennoy Bezopasnosti), which was the umbrella organization serving as the Soviet Union's premier security agency, secret police, and intelligence agency, from 1954 to 1991. The KGB's operational domain encompassed functions and powers like those exercised by the United States' Central Intelligence Agency (CIA), the counter-intelligence (internal security) division of the Federal Bureau of Investigation (FBI), the National Security Agency, the Federal Protective Service, and the Secret Service in the United States, or by the twin organizations MI5 and Secret Intelligence Service (MI6) in the United Kingdom. On December 21 1995, the President of Russia Boris Yeltsin signed the decree that disbanded the KGB, which was then substituted by the FSB, the current domestic state security agency of the Russian