Iranian President Hassan Rouhani said Turkey has the right to worry about its borders with Syria, during a cabinet meeting on Wednesday.
According to Iranian local media, Rouhani called for "removing Turkey's security concerns," adding that a "proper path" should be taken to remove these concerns.
However, he noted that neither Turkey nor Syria would benefit of this operation.
Rouhani's remarks come hours before launch of Turkey's military operation in northern Syria.
Turkish President Recep Tayyip Erdogan has just announced the launch of Operation Peace Spring against PKK/YPG and Daesh terrorists in northern Syria.
On Monday, U.S. has started withdrawing its troops from army bases in many cities northern Syria.
Turkey launched on Wednesday Operation Peace Spring east of the Euphrates River in northern Syria to secure its borders by eliminating terrorist elements to ensure the safe return of Syrian refugees and Syria's territorial integrity.
Turkey has said the terrorist group PKK and its extension the YPG/PYD constitute the biggest threat to Syria's future, jeopardizing the country's territorial integrity and unitary structure. Turkey has also stressed that supporting terrorists under the pretext of fighting Daesh is unacceptable.
Turkey has a 911-kilometer (566-mile) border with Syria and it has long decried the threat from terrorists east of the Euphrates and the formation of a terrorist corridor there.
Turkey plans to resettle 2 million Syrians in a 30-km-wide (19-mi) safe zone to be set up in Syria, stretching from the Euphrates River to the Iraqi border, including Manbij. However, the presence of terror groups such as the PKK, PYD, and YPG risk its formation.
Turkey has rid an area of 4,000 square km (1,544 square miles) in Syria of terrorist groups in two separate cross-border operations. Since 2016, Turkey has conducted two major military operations in northwestern Syria -- Operation Euphrates Shield and Olive Branch -- to purge the region of the terrorist groups Daesh and the YPG, which is the Syrian branch of the terrorist group PKK.
The two operations were in line with the country's right to self-defense borne out of international law, UN Security Council resolutions, especially no. 1624 (2005), 2170 (2014) and 2178 (2014), and under the right to self-defense under Article 51 of the UN Charter, while being respectful of Syria's territorial integrity.
During Operation Euphrates Shield, Turkish forces neutralized 3,060 Daesh terrorists. Turkey has suffered greatly from Daesh attacks inside the country. More than 300 people have been killed in attacks claimed by Daesh in Turkey, where the terrorist group has targeted civilians in suicide bombings and armed attacks in recent years.
In its more than 30-year terror campaign against Turkey, the PKK -- listed as a terrorist organization by Turkey, the U.S. and the EU -- has been responsible for the deaths of some 40,000 people, including women, children, and infants.
Since 2016, Turkey's Euphrates Shield and Olive Branch operations in northwestern Syria have liberated the region from YPG/PKK and Daesh terrorists, making it possible for Syrians who fled the violence to return home.
Source: Anadolu Agency