Book excerpt: The paradigm of state consent in the law of treaties is increasingly under attack. Which narratives on the treaty concept legitimize or delegitimize the challenges to the consensualist paradigm? Which areas of the law of treaties are more concerned by these attacks? What are the ensuing risks? From consent to be bound to treaty succession, and from treaty denunciation to reservations, this book offers a tour de force on the paradigm of state consent, its challenges, and their politics.