Turkey's military buildup on its border with Syria aimed at crushing Kurdish fighters has fueled worries in Iran, which has remained the key regional ally of President Bashar al-Assad during his country's eight-year conflict.
Addressing a Cabinet meeting Oct. 9, just before Turkey launched a military operation into northern Syria, Iranian President Hassan Rouhani called on Turkey, the "brotherly" country, to exercise "patience" and "reconsider" the planned operation.