For Turkey, peace with the PKK now would further reduce a weakened Iran’s ability to project power westward. Some groups suspected of being affiliated with the PKK, such as the Sinjar Resistance Units in northern Iraq, have been indirectly supported by Iran.

A top official says Turkey is closely monitoring any attempts to undermine its peace initiative with the PKK following the militant Kurdish group’s announcement that it is ending its decades-long armed conflict with the Turkish state.

The Kurdistan Workers Party (PKK) militant group, which has been locked in bloody conflict with the Turkish state for more than four decades, decided to disband and end its armed struggle, a news agency close to the group reported on Monday.