European nation-states have a great interest in integration to give up on the organization they have spent over half a century building. There is a Europe's growing need to ensure its own security that will call for more cooperation on the political level. European Union has reached a crossroad, where it must choose between liberalizing its economy or pursuing the dirigiste policies that have held back growth in some of its largest member and between enhancing,its historic alliance with the United States or attempting to play the role of a geopolitical "counterweight" to America. For more than half a century, the atlantic alliance has been the basis for European security and a cornerstone of global stability.Now Europe is beginning to develop a collective military identity of its own, without the participation of the United States.This article will discuss European power as hard and soft power, its common foreign and security policy, Euro-Gaullist versus Euroatlanticist as well as the future of the Atlantic partnership .What will be the dangers and opportunities arising from the European Union's growing authority in security and defense? Will Europe be the next superpower?