Weil, Prosper Keywords: State contracts | Mots clefs: Contrats d Etat | ABSTRACT In this course, Prosper Weil examines the extent to which contracts concluded between a State and a foreign private person are relevant to public international law. After a first part devoted to the internationalization of contractual problems, the author focuses on the development of international contract law. Dans ce cours, Prosper Weil se propose d'examiner dans quelle mesure les contrats conclus entre un Etat et une personne privée étrangère intéressent le droit interna…