The latest announcement comes amid reports of numerous gains made by the Turkish military and allied Free Syrian Army (FSA) forces, with the government stating that over 3,000 YPG fighters have been neutralised since the beginning of the operation.
The talks between Turkish and American officials have begun in the US capital, Washington where they are expected to discuss a number of matters of bilateral interest, Syria and Turkey's ongoing Operation Olive Branch, in Afrin, among them.
Turkey sees the YPG as a terrorist group and an extension of the outlawed Kurdistan Workers Party (PKK).
Cars and buses reportedly carrying people from across Syria's Deir ez-Zor region arrived in Afrin via the Zahra crossing on Thursday, March 8, Al-Masdar News says.
Syria condemned the Turkish campaign as an act of aggression, which is meant to support terror outfits operating inside the conflict-plagued Arab country.
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In the first half Alexis (Sanchez) was on the left, in the second half he was behind Lukaku. The only thing is that has saddened me today is the fact we've gone home with no points.
"We have besieged Afrin".
US -allied forces in eastern Syria said Tuesday that they are withdrawing from the front lines of the war against the Islamic State in order to battle the United States' NATO ally Turkey elsewhere in the country, jeopardizing the fight against the militants.
Graphics published by state media show that the Turkish forces are seeking to encircle Afrin in a two-pronged pincer movement from the northeast and southwest, though they have yet to fully surround it.
Erdogan has threatened to move on to capture the town of Manbij, east of Afrin, to remove Kurdish-led forces along whom USA troops are stationed since 2016 when they drove out IS. "The next day we will ensure that the east of Euphrates will be cleared of terrorists up to the Iraqi border", he said.
On a visit to Ankara last month, US Secretary of State Rex Tillerson said that Turkey and the US had to solve the tensions surrounding Manbij as a "priority".