Unique in its breadth of coverage, the Annual Review of Global Peace Operations presents the most detailed collection of data on peace operations—those launched by the UN, by regional organisations, and by coalitions—that is available. Features of the 2012 volume include: • a thematic focus on the role of peace operations in the extension of state authority • a summary analysis of trends and developments in peace operations through 2011 • concise analyses of all peacekeeping missions on the ground in 2011 • in-depth explorations of key missions, focusing on those that faced significant challenges or underwent major developments in 2011 • extensive, full colour maps, figures, and photographs