Cleansing Turkey

On one traumatic night in July, a faction of the Turkish military tried to overthrow the government. The coup failed, but hundreds of people were killed. President Erdogan said it was the work of the US-based cleric Fethullah Gulen and his supporters. Gulen denies involvement, but President Erdogan has vowed to �cleanse the virus� behind the coup attempt and thousands of Turks, accused of being Gulenist sympathisers, have lost their jobs. Tim Whewell reports.