The Special Monitoring Mission to Ukraine (SMM) is one of the OSCE's few success stories in recent years. This civilian mission has been uniquely able to operate as a quasi-peacekeeping force in high-risk areas of Donbas, monitoring ceasefire compliance and facilitating dialogue and humanitarian action in support of those living in the conflict zone. In the history of the OSCE, there has been only one other ceasefire monitoring mission: the Kosovo Verification Mission (KVM). This contribution to OSCE Insights considers the track record of OSCE peace operations, with special attention to the abovementioned missions. All OSCE peace operations to date have been civilian missions, and this paper considers military OSCE mission to be unfeasible also for the future. The paper provides lessons learned and recommendations for future missions by the OSCE and other organizations operating in high-risk environments.