The biggest problems facing the government were the reintegration of more than 2 million refugees returning from as long ago as 1959; the end of the insurgency and counter-insurgency among ex-military and Interahamwe militia and the Rwandan Patriotic Army, which is concentrated in the north and south west; and the shift away from crisis to medium- and long-term development planning. The prison population will continue to be an urgent problem for the foreseeable future, having swelled to more than 100,000 in the 3 years after the war. Trying this many suspects of genocide will tax Rwanda's resources sorely.