"The ninth observation post has been set up in Idlib," the Turkish General Staff said in a tweet.
According to the Anadolu news agency, a military convoy of 100 vehicles crossed the Turkish-Syrian border on Saturday morning and reached the post, which is located in the Morek region in 88 kilometers (54.6 miles) from the border. The Syrian government forces and Iran-supported militias are deployed just in three kilometers from the new observation post.
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In general, Turkey seeks to gradually establish 12 observation posts from Idlib's north to south.
The agreement on the establishment of de-escalation zones has been reached by the Syrian ceasefire guarantor states — Iran, Russian and Turkey — as part of the Astana peace process for Syria.