The Haiti Stabilization Initiative (HSI) was an innovative interagency program prototype designed to secure and stabilize the highly volatile urban slum of Cité Soleil. Between 2007 and 2010, HSI successfully tested a sophisticated Monitoring & Evaluation (M&E) program using a variant of the Department of Defense supported system Measuring Progress in Conflict Environment (MPICE). Through MPICE, HSI and its analysis partner Logos analyzed outcomes and impacts within key sectors. The analysis revealed that one needs a clear "theory of change." However, many stabilization or counterinsurgency programs do not evaluate themselves. They lack a provable hypothesis, and proving causality of change based on program efforts remains a challenge. Furthermore, it is critical to measure the achievement of "outcomes" within and across sectors, not just mechanical "outputs" of programs. It is also necessary to triangulate data and overlap sources. Toward that end, perception-based data (surveys, focus groups, expert elicitations sessions) and objective data (MINUSTAH statistics, crime reports) provided for a rich form of "triangulation" analysis.