The Syrian army, according to Al Mayadeen sources, reinforced its military posts, on Monday evening, in the city of Ain Issa in the northern countryside of Raqqa, which is under the control of the SDF militants.

The sources indicated that the Syrian army also reinforced its military positions in the city of Ayn Al-Arab in the eastern countryside of Aleppo.

The director of the SDF media office, Farhad Shami, said that "550 soldiers from the Syrian army have arrived in SDF areas," adding that "the Syrian soldiers arrived in the SDF areas after an initial understanding to confront any Turkish aggression on the region."

Earlier on Monday, Al Mayadeen sources indicated that "two Russian cargo planes (Yuchen) arrived on Sunday at Qamishli Airport,” adding that these measures are part of Russia’s military measures in the region. According to Mehr, the planes were carrying more than 500 soldiers from the Russian paratroopers unit. 

Furthermore, the sources revealed that Qamishli’s geographical location plays a significant role in its proximity to the “illegal bases of the American occupation in the province of Hasaka, and the fact that it is in contact with the Turkish border, which is, at the same time, a border for NATO."

Read more: We believe Russia won't interfere with Turkish op. in Syria: Cavusoglu

Furthermore, in the previous weeks, there have been indications that “Turkey will launch an imminent military attack after bringing in large military reinforcements, and conducting Ground maneuvers between the Turkish army and factions known as the "National Army"."

On May 23, Turkish President Recep Tayyip Erdogan announced that "the Turkish army intends to carry out anti-terror military operations at the Turkish state borders," noting that "the decision on these operations will be taken soon."

Commenting on this, the Russian envoy to Syria, Alexander Lavrentiev, said the possible Turkish military operation in northern Syria would create "new security threats" to Turkey, as "the Kurdistan Workers' Party and the SDF will not disappear under this scenario."

Lavrentiev added that "Russia will try to convince Turkey of the futility of the possible military operation in northern Syria," stressing that his country "will not fight the Turkish forces and the “National Army" affiliated with Ankara." 

Earlier on Monday, July 4, Turkish Foreign Minister Mevlut Cavusoglu stated that Turkey believes Russia would not interfere with the operation of Turkish offensive forces in northern Syria, although tensions persist.

Read more: Russian forces boost numbers after Turkey threatens operation in Syria