On Saturday, Turkish President Recep Tayyip Erdogan said 3,171 YPG militants had been "neutralized" since the beginning of the operation, meaning they had either surrendered or been killed or captured.
Turkey launched "Operation Olive Branch" on January 20 aiming to clear Afrin of the People's Protection Units (YPG), which Ankara regards as an offshoot of the outlawed Kurdistan Workers' Party (PKK) and a threat to Turkey's security.
Turkey's president has criticized North Atlantic Treaty Organisation for not supporting the country's ongoing military operation against Syrian Kurdish fighters in Syria.
Pro-Kurdish demonstrators staged protests against Turkey's military offensive in northern Syria on Sunday scuffling with Turks and German police at Dusseldorf airport, while in Britain they temporarily closed two train stations, authorities said.
"Hey NATO, with what has been going on in Syria, when are you going to come and be alongside us?"
He said Turkey sent troops to conflict zones when requested, but did not receive support in return.
Ibrahim Ramazani, from Iran, said terrorists who Turkey had fought against are now trying to establish terror corridors at its borders. Is this friendship? Is this North Atlantic Treaty Organisation unity?
Erdogan is referring to the NATO (North Atlantic Treaty Organization) vow that member states make to one another, known as Article 5: that an attack against any member state will be considered an attack against all member states, and will draw an immediate and mutual response.
Turkey's objective has put it in direct contrast to U.S.'s objective of building a force to stabilize the region.
PKK forces have been battling Turkey for decades, with fighting largely concentrating in southeastern parts of the country. The country considers the YPG a terror organization but its North Atlantic Treaty Organisation ally, the United States, backs the fighters to combat Daesh group.