ISTANBUL (Xinhua) – A blanket of heavy snow covered Turkey’s largest city Istanbul on Friday, disrupting air traffic, bringing sea and land transport to a halt, and forcing school closures. The country’s airlines, including the flag carrier Turkish Airlines, canceled most of their flights in Istanbul for Friday and Saturday due to the blizzard. Intercity bus services from all the terminals have been suspended, and entrance from Anatolia and Thrace to the city remained close for trucks. Sea traffic through the Bosphorus Strait, which connects the Black Sea and the Marmara Sea, has ceased due to low visibility.