A new article by Sia Spiliopoulou Åkermark was recently published in Journal of Conflict and Security Law. The article moves across international, European Union (EU) and domestic law while examining the legal puzzle of collective security. The article “The Puzzle of Collective Self-defence: Dangerous Fragmentation or a Window of Opportunity? An Analysis with Finland and the Åland Islands as a Case Study” was published in Journal of Conflict and Security Law, Volume 22, Issue 2, 1 July 2017. The article can be found here.