Clear and Present Danger by Tom Clancy

The president, unsatisfied with the success of his "war on drugs," decides that he wants some immediate success. But after John Clark's covert strike team is deployed to Colombia for Operation Showboat, the drug lords strike back taking several civilian casualties. The chief executive's polls plummet. He orders Ritter to terminate their unofficial plan and leave no traces. 

Reuploaded Thanks to emkis