Evolution of Transatlantic Relations in the Security Sphere under the Administration of D. Trump

The Transatlantic community encompassing the USA and the European Union has a long- standing history, the major part of which was characterized as close cooperation in the economic, political, cultural and security spheres. The situation has undergone severe changes when Donald Trump came to President’s office in the January of 2017. A number of occasions and processes initiated by D.Trump resulted in considerable degradation of bilateral relations, affecting the most crucial area of cooperation – collective security. In this research we will define the nature, the character and the scale of changes that have occured in the security sphere under president Trump's administration. We will also attempt to identify whether these changes have political roots in the previous period of transatlantic relationship that was not characterized by such high degree of mutual mistrust and tensions.