Turkish President Recep Tayyip Erdogan insisted he was still planning to visit Iran next week, despite a dispute with Tehran over the Yemeni crisis.
Turkey's NTV said the visit is so important for Turkey and Iran.
Erdogan said on Thursday "Iran is deploying all its efforts to dominate the region. How can that be tolerated?"
"This has begun annoying many countries in the region: us, Saudi Arabia, Gulf countries. This really cannot be tolerated."