The Prix Pictet chose "power" as the theme for this photo competition. The introduction, although not part of the photo collection, gets the notion off to a strong start, with commentary by Kofi Annan - secretary-general of the U.N. for nearly a decade. One might argue that other political figures have wielded greater political power, but I think that view lacks subtlety. The U.N. is where nations come together, working for their common good. The delicacy needed to navigate the divergent goals and hostilities expresses a different kind of power, as does the premise of hope in ongoing multi-national cooperation.