In recent decades, changes in world development have brought global security to the forefront, as well as that of individual countries and regions. Security, whether global, national or regional, is linking to the geopolitics and geoeconomics that lead major countries and political blocs. The world that has being forming because of globalization is interdependent on economic and integration processes. The modern free movement of goods and services, as well as the unrestricted distribution of information, pose serious threats to society. There are also negative consequences of globalization such as the destruction of national societies and social ties. That is why the problem of security in all its aspects is a particularly important and topical issue for modern science. The present study analyzes the theoretical and applied aspects of national security – demographic, military, economic, political, information and others. In recent months, medical and infectious aspects of security have become important in connection with the COVID-19 pandemic. The main alternatives for the development of the world are indicated, incl. and Europe, internal and external problems and threats to the EU.