Maybe it is too soon to call it a tradition, but in recent years your colleagues and friends in The Hague have sponsored this closing plenary with much pleasure. In cooperation with the City of The Hague and His Majesty's Embassy, the Asser Institute for International and European Law has organized the panel discussion at the closing plenary. Our subject this year is multilateralism, a topic that is close at heart to many of us. That is certainly the case for us, practitioners and scholars based in The Hague, where international efforts for multilateral agreements and institutions have been part of the fabric of our city since the nineteenth century. Multilateral institutions continue to define the spirit of our city.