In principle, but thus far not in practice, the OSCE may undertake a peacekeeping operation, perhaps with assistance from NATO, other military alliances, “coalitions of the willing,” or individual participating states, to oversee political agreements between disputing parties.
The OSCE anticipated establishing a peacekeeping operation as part of a political settlement between the parties to the conflict in Nagorno-Karabakh at the 1992 Helsinki Summit.
The Budapest Summit changed the name of the CSCE to OSCE, reflecting the fact that the CSCE was no longer simply a Conference, December 1994. (OSCE)
At the 1994 Budapest Summit it created a High Level Planning Group to prepare for such an operation. However, a political settlement remained elusive. More recently, the OSCE has envisaged a possible peacekeeping role for itself as part of a political settlement in Moldova.