Syrian authorities on Saturday began transferring Kurdish fighters from the country's second city Aleppo to areas they control in the country's northeast, state television reported, after days of deadly clashes.The violence in Aleppo erupted after efforts to integrate the Kurds' de facto autonomous administration and military into the country's new government stalled.Since the fighting began on Tuesday, at least 21 civilians have been killed, according to figures from both sides, while Aleppo's governor said 155,000 people have been displaced.