The following datasets are available

Referendums in Peace Process Dataset

Greek-Turkish Negotiations and Crises 1983-2003

Replication Data for Akisato Suzuki  and Neophytos Loizides. 2011. Escalation of Interstate Crises of Conflictual Dyads: Greece-Turkey and India-Pakistan. Cooperation and Conflict 46, no. 1 (March): 21-39.