Iranian president Hassan Rouhani and his Turkish counterpart  Recep Tayyip Erdogan met on the sidelines of third trilateral meeting on Syria on Friday.

Iran press/Iran: Turkish president arrived in Tehran on Friday to attend the trilateral meeting with his Iranian and Russian counterpart.

Turkish President Recep Tayyip Erdogan. is also expected to have bilateral talks with his Russian counterpart  Vladimir Putin on the sidelines of the trilateral talks.

Rouhani, Putin and Erdogan are to attend a meeting on Friday for exchange of views on the process of fighting terrorism and establishing security in Syria.

The first of the trilateral summits was held last year in Russia's Black Sea city Sochi on Nov. 22. The second trilateral summit held in Istanbul.

The Third summit came as the Syrian army’ is preparing for attacking Idlib, the last stronghold of terrorists in the north.

Erdogan told reporters on Wednesday that a positive outcome is expected from the upcoming Syria summit in Iran.