The development of international law is enshrined in the Dutch Constitution and is therefore an integral part of Dutch foreign policy. A key part of this is the Peace Palace in the Hague, which is home to a number of international judicial institutions, including the International Court of Justice (ICJ) or World Court, the Permanent Court of Arbitration (PCA), the Peace Palace Library, as well as the Hague Academy of International Law, which attracts law students from all over the world every summer.

In 1998, 60 countries signed the Rome Statue, laying the foundation to establish the International Criminal Court in 2002. The course prosecutes those accused of war crimes, crimes against humanity, and genocide.