Ankara says that major progress has been made in the operation, with hundreds of YPG fighters killed so far although it is not possible to verify these figures.
Erdogan said in a speech Saturday that the Turkish forces were beginning to take mountain positions and would now head towards Afrin itself. "There is not much to go," he said.
Erdogan's spokesman Ibrahim Kalin meanwhile told journalists in Istanbul that the operation was going as planned but there was no timetable for its duration and it would "continue until we clear all those areas."
But analysts and monitors say Turkey so far has taken control of limited clumps of territory around the border without yet approaching near Afrin town.