What does the Belt and Road Initiative mean for the existing multilateral organisations? What can it represent for the future of the European Union in the long run? What is the role of hard and soft law in the functioning of the Initiative? What does it represent from a legal theory perspective? This book aspires to contribute to the international debate by gathering scholars with different backgrounds (legal theorists, public international lawyers, comparative lawyers) in a way that they can offer their inputs and observations concerning the Belt and Road Initiative.