For some time, the EU and International Arbitration enjoyed a peaceful coexistence. That has radically changed. First, the EU came to view the so-called intra-EU bilateral investment treaties as interfering with the “autonomy” of EU law. More generally, the notion of “EU public policy” has grown to the point that it is now challenging international arbitration, both commercial and investment. Finally, a whole new generation of EU-driven international investment agreements is entering into force. They clearly reflect the EU’s vision of what the investment law and arbitration should look like going forward, a project that many countries disfavor. The course covers all these aspects -and others- of the EU/international arbitration interface.