In my thesis Folkrätten i svensk säkerhetspolitik (1993) I studied how Sweden has used international law in its security policy. The period studied was 1945-1992. Since then, both international law and Swedish security policy have undergone major changes. The neutrality policy has been abandoned, Sweden is a member of the EU, the role of the UN has changed, and new threats to world peace have emerged. There are more examples. The starting point for the current study, which covers the period 1993-2015, is that Sweden's use of international law in its security policy has changed accordingly. The question is to what extent this change has occurred, why it has occurred and whether the change has had any decisive legal or political consequences. One aim is to find out whether Sweden still uses international law for protection, whether Sweden still has a strong belief in international law and collective security, whether Sweden still tries to limit states' freedom of action by means of legal and political commitments, and whether Sweden still interprets international law strictly when it favors Swedish interests and flexibly when it is considered more appropriate. The study will be divided into five main parts: Neutrality, Membership in the UN, Protection of its own territory, Reduction of external threats and International courts.