The primary goals of U.S. support to Latin America are to promote peace and to improve economic stability. Lessons learned from Plan Colombia and the War on Drugs and Narcoterrorism can be applied to the current threat perpetuated by the Sendero Luminoso (SL) in Peru. Using a framework consisting of the elements of National Power as viewed through the lens of Culture (C-DIME), the following paper will illustrate how the United States can support Peru in strengthening its national institutions and defeating the SL and its narco-criminal sponsors. This paper analyzes how the principles behind the success of Plan Colombia, rather than the specified practices employed, can be applied in Peru to defeat SL efforts in order to advance U.S. security interests while concurrently enabling host nation efforts to build legitimacy and expand security. Based upon this framework, the U.S. should continue its support of Peru in its endeavors to deter, defeat and demobilize the Sendero Luminoso.