Oleksandr V Danylyuk is the Chairman of the Center for Defense Reforms. Throughout his career, he has closely cooperated with the Ukrainian government structures in the defence, security, and intelligence sectors. In 2014, he was the Chief Advisor to the Minister of Defence of Ukraine. He subsequently served as a Special Advisor to the Head of the Foreign Intelligence Service of Ukraine, Assistant to the Commander-in-Chief of the Armed Forces of Ukraine, and, for many years, was also a member of the Parliamentary Working Group on Countering Hybrid Threats. For the past few years, he has been the coordinator of the Ukraine-NATO platform for the early detection and countering of hybrid threats. His main field of practical and academic expertise is Russian multidimensional warfare, active measures, and subversive activities of Russian and Soviet special services, as well as whole-of-government and whole-of-society approaches to countering Russian hybrid aggression.