In historical perspective, the Kosovo war stands as a significant turning point. Within the Balkan region, Operation Allied Force marked the end of the nationalist wars of the 1990s and the beginning of a new phase of partnership and integration with the EU and NATO. In terms of the wider European security order, its repercussions were contradictory. NATO reasserted its role as Europe's leading security institution, yet Operation Allied Force also gave significant momentum to the EU's development as a quasi military body. Further afield, an immediate crisis erupted in Russo-western relations followed by renewed cooperation on the ground; the longer-term impact, however, was a lingering resentment in Moscow at NATO action. At the global level, meanwhile, Operation Allied Force appeared to symbolize the primacy of both American-led western power and of the liberal norms and values that underpinned the intervention. But this was arguably a high point: future global security crises would be managed in the context of the rising power of the non-western world, a more fragmented West and greater contestation over the norms that should underpin international society. [ABSTRACT FROM AUTHOR]$\backslash$nCopyright of International Affairs is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)