title: The Paradox of Global Norms
abstract: The need to create global rules to address global problems or challenges (climate change, international migration, biodiversity reduction, activities in cyberspace and even outer space), to protect global common resources and to provide global public goods is increasingly pressing. However, this demand contrasts with an international practice in which it is complicated and sometimes very difficult to adopt new global norms. This is a critical paradox as global norms are more necessary than ever 
journal: Spanish Yearbook of International Law