When Colombian President Cesar Gaviria Trujillo took office last year, he called narco-terrorism "the main threat against our democracy." He made the cocaine dealers based in Medillin, the country's second largest city, the chief target of antidrug efforts. Today, reputed drug-lord Pablo Escobar and other gang members believed to be responsible for hundreds of bombing and shooting deaths await trial.While this may hinder one notorious group of cocaine traffickers, another equally insidious operation may present as great a threat. Time magazine has called a Cali-based cartel "the most powerful criminal organization in the world" and the main supplier of cocaine to the United States. Colombian officials say the Cali cartel is the next focus of their war on drugs.