USD's David Shirk Comments on Drug-War Tensions in TIME

TIME -- If the agents were deliberately targeted, the inevitable suspicion is that someone passed information of their movements to the cartels. In recent years, dozens of Mexican officials have been arrested for leaking data to gangsters. "There could be many ways of tracking the agents, including bugging their phones. But the suspicion of traitors is bound to be there," says David Shirk of the University of San Diego's Trans-Border Institute. (Full Story)