ABSTRACT
The international security agenda has widened in the 1990s and 2000s as a result of the globalization of threats. In the transatlantic area, the United States, the North Atlantic Treaty Organization (NATO) and the EU have revisited their strategies and developed new policies and instruments to face a diversity of threats ranging from terrorism to pandemics. At the end of the first decade of the twenty-first century, are the three main security providers in the transatlantic area better equipped to deal with international security crises than in the aftermath of the Cold War? By using the concept of security provider and applying the security governance approach, this chapter evaluates the contributions of the United States, NATO and the EU to transatlantic security. The core argument holds that while NATO and the EU have steadily redefined their functions as well as their territorial and operational space as a result of the enlargement and institutional transformations since the mid-1990s, the United States has maintained a predominant role as a security provider in Europe and beyond.
