Advisor to the head of the President's Office Mykhailo Podoliak has said that Ukraine will defend itself voluntarily and massively, regardless of the age and social status of the defenders.

"Yavoriv. International Center for Peacekeeping & Security. Ukraine will defend itself. Voluntarily. Massively. Regardless of age & social status. For the sake of families & children. Proof of this is overcrowded training areas & military enlistment offices! This is just the beginning," he said on Twitter Sunday.