This book results from a symposium organized by Genesys Network, which took place on

April 29^th, 2015, in Louvain-la-Neuve, Belgium. The organizers invited contributors to think

about the concept of power in the context of the evolving international system, and what

it implied for the study of the concept in IR academic field.

Indeed, if the end of the Cold War was characterized by a "unipolar moment" as defined

by Krauthammer in 1991, this period is starting to come to an end. While the United States

remains arguably a global superpower, its position is more and more disputed by other

actors. Likewise, new centers of power have emerged. Today's world is complex and

transitional, characterized by both short- and long-term challenges; interactions among

these powers remain to be apprehended and understood. In the last decade, we have

also observed an economic and partially political shift or redistribution of power from

the "West to the Rest" on the classical state power chessboard. The beginning of the 21st

century thus constitutes an important challenge for the super- and emerging or resurgent

powers. The new global state of affairs is characterized by conditions that are more

complex than in the past. In these circumstances and in the face of these worldwide

trends, the concept of power has evolved and the need to redefine or think the concept

has become a necessity.

The present book thus aims at presenting the diversity of views on the concept of power

but also, perhaps more importantly, their complementarity.