War does not respect political or territorial boundaries. This twenty-second Accord publication looks at how peacebuilding strategies and capacity can ‘think outside the state’: beyond it, through regional engagement, and below it, through cross-border community or trade networks. Edited by Alexander Ramsbotham and I William Zartman, Paix sans frontières: building peace across borders includes 20 case studies from Asia, Europe and the Caucasus, to East, Central and West Africa, Central America and the Middle East. Articles also explore cross-border peacebuilding from global, systems analysis and legal perspectives, and focus on themes ranging from politics, governance and security, social and community relations, and trade and natural resources.