Mezghani, Ali Keywords: Contracts | Illegal activities | Private international law | Law of contracts | Mots clefs: Contrats | Pratiques illicites | Droit international privé | Droit des obligations | ABSTRACT Ali Mezghani reports in this course on the exponential increase of unlawful activities and on the fact that it is impossible for the law to remain without answer vis-à-vis this increase. Professor Mezghani endeavours to give an account of the law's answer in three different terrains. First of all, in the field of rules o…