MONTERREY, Mexico, June 11 (Reuters) – Soldiers are cracking down on corrupt police in Mexico’s richest city, exposing the reach of powerful drug traffickers who have tarnished its reputation for stability and order. Heavily armed troops have rounded up more than 80 police in and around the business city of Monterrey this month after finding lists of officers apparently in the pay of the Gulf cartel and its notorious armed wing, the Zetas.Full Story