The Security Council of the RSFSR was legally set up by Congress of People's Deputies of Russia    in April 1991 along with the post of the President of the RSFSR (the RSFSR at that time operated as one of the constituent republics of the USSR).
The Security Council of the RSFSR was established by Congress of People's Deputies of Russia in April 1991, alongside the position of President of the RSFSR (the RSFSR at that time functioned as one of the constituent republics of the USSR).