Afghanistan, Syria, Libya and Mali have been hotbeds of conflict for years on end. In each of these conflicts, the West is involved, either directly or indirectly by means of NATO or UN missions. In this Clingendael Spectator series on Western interventions, the current status and the future of the conflicts will be analysed. Second stop: Syria, where the Turkish invasion that started on 9 October is only the latest illustration of the fact that the Syrian civil war has featured one foreign intervention after another. This article provides an assessment of the tactical military success and the broader strategic effects of eight sets of intervention.