Matt Helm - The Threateners
Donald Hamilton

"Don't worry, we're not going to shoot you...yet." 

A ruthless South American drug lord has a plan to bring the United States to its knees. A group of renegade American agents has plans to smash the kingpin and his cartel, by any means necessary. Caught in the middle, Matt Helm's got to do double duty to stop them both, and to protect a woman with information both sides would kill for...