The enforcement of repressive extraterritorial laws is subject to the rules of jurisdiction of ordinary law, or of derogatory jurisdiction in criminal and tort matters, and depends on the quality of the implemented international cooperation. The French courts’ jurisdiction was extended by means of the universal jurisdiction. The issue of limitation periods for prosecution must give way for a thorough reflection on the irreversible trauma that victims endure, and on the effective involvement of destination countries. The sharing of information and international cooperation regarding crimes of child sex tourism are encouraged.