After the Bolsheviks occupied Azerbaijan in April , 1920 , the Ministry of Foreign Affairs was abolished and was replaced by Azerbaijan SSR People 's Foreign Affairs Commissariat ( PFAC ) .
After Azerbaijan was occupied by the Red Army and became a part of the Soviet Union on 28 April , 1920 as the Azerbaijan Soviet Socialist Republic ( Azerbaijan SSR ) , the Ministry of Foreign Affairs was abolished and was replaced by People 's Foreign Affairs Commissariat ( PFAC ) .