Foreign Minister Mohammad Javad Zarif urged respect to sovereignty, territorial integrity and national unity of Syria and underscored the need for efforts to prevent its division.
He made the remark on Tuesday during trilateral meeting attended by foreign ministers of Iran, Turkey and Russia.
Zarif told reporters that negotiations have been made with Russian Foreign Minister Sergey Lavrov during the trilateral meeting which was held two months ago in Moscow during which sides agreed on having a joint meeting with Turkey on Syria.
'We held a meeting with Turkish officials in Tehran to coordinate this issue and all three countries are making attempts to have political negotiations on establishing truce in Syria and on sending humanitarian aids', he added.
Zarif noted that the points considered during the meeting were approved as a joint statement.
Foreign ministers of Iran, Russia and Turkey began a trilateral meeting in Moscow on December 20 with a focus on the humanitarian crisis in Syria, particularly the dispatching emergency relief supplies to Aleppo.
Iranian Defense Minister Brigadier-General Hossein Dehqan is also in Moscow to develop cooperation on defense and security with the Russian Federation.