The alliance between the U.S. and Europe is still of great importance for global security and stability and the two sides of the Atlantic face many common challenges. But while the post-Cold War order is undergoing fundamental changes, so are transatlantic relations Transatlantic ties between the United States and Europe have been strained recently. At the moment, it is not easy to hold on to the presumption that the ties are unshakable. Common security interests crowned by the establishment of NATO in addition to shared values and history have led to lasting partnerships; however, nowadays discussions are mainly about the future of the relationships and their relevance. The alliance between the U.S. and Europe is still of great importance for global security and stability and the two sides of the Atlantic face many common challenges. But while the post-Cold War order is undergoing fundamental changes, so are transatlantic relations. Since the end of World War II, the