Ukrainian politician, scientist, Vice-President of the National Academy of Sciences of Ukraine, Secretary of the National Security and Defense Council of Ukraine (1995-1999)
Director of the Center for Army, Conversion and Disarmament Studies(CACDS), Ukrainian writer and security expert.
Defense Express Media & Consulting Company, Director. Author of a series of popular books on Ukrainian weapons and military equipment.
Director of the National Institute For Strategic Studies, Director of the National Security and Defense Council of Ukraine (2014 - 2019)