MAHAMAT RAMADANE CALM has returned to the capital of Chad appeared, with security forces deployed in large numbers and burning tyres still smouldering in the streets, a day after at least five people were killed in clashes between protesters and the army. Civil society groups have called for more demonstrations against the military, which took power after long-serving president Idriss Deby was killed on April 19. The government said five people were killed in clashes on Tuesday. A Chadian civil society group put the death toll at nine, with dozens more injured. Although opposition and civil society groups called for…