Democracy and international security face significant challenges in the modern world. There is a violation of the universally recognized principles of law by the Russian Federation, which is manifested in the military invasion of the territory of other sovereign countries, Ukraine, Georgia and the occupation of their territories. These countries are trying to modernize the state, to introduce democracy, the rule of law, recognized human rights standards, which are threatened by the aggressive actions of the Russian Federation. Overcoming this threat, these countries see their full integration into the Euro-Atlantic area. To achieve this goal, Georgia and Ukraine, other countries have reflected Euro-Atlantic aspirations in the constitutions as a constitutional principle and policy agenda for the government. The paper discusses the new constitutional guarantees of Euro-Atlantic integration for the democratic and secure development of states in comparative perspective.