National Security as a Component of Global Security: Lessons from Ukraine’s Crises

The article exposes new security threats in Europe and worldwide. The attention is paid to Ukraine’s national interests to preserve the strategic balance in the current geopolitical environment in the areas of national and international security. It is analyzed the question whether such country as Ukraine should be interested in maintenance of Euro Atlantic organization. The authors present their vision of the international and Ukraine’s national security in the 21st century context, analyze new challenges and security threats searching for the reason of collapse of the modern security system. All the research conclusions are based on the national security situation in nowadays Ukraine