Colonel-General (ret.), formerly he was an Adviser of the Global Consulting Group. For more than 40 years, worked in the Soviet/Russian Armed Forces’ agencies. In 1992-1997, chief of the Main Intelligence Administration (GRU) of the RF Armed Forces General Staff. In 1990-1992, he participated, as the chief of the International Treaties Department of the Armed Forces General Staff, in the preparation of treaties and agreements in the area of arms control and disarmament, including: START-I; Conventional Armed Forces in Europe Treaty; Open Skies Treaty; Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on Their Destruction. From 2002 until his death in 2021, Fedor Ladygin remained a PIR Center Advisory Board member.