As a result of the challenges presented by the 5.6 million Syrian refugees in neighboring countries, the United Nations Development Program and the United Nations High Commissioner for Refugees have co-led the Regional Refugee and Resilience Plan (3RP). Therefore, the SIPA team provided a Programmatic Understanding of the Syrian Refugee Crisis and the Humanitarian and Development Nexus (PUSH-D). As a part of PUSH-D, the SIPA team proposed the conceptual framework, the Diminishing Capacity Gap Response Framework (DCGRF), in order to implement PUSH-D and strengthen national capacities of the 3RP host governments. The DCGRF shows how humanitarian response, development aid, and national capacities go through four phases of response, linked by resilience as the Humanitarian and Development Nexus. Moreover, the Team suggested recommendations related to attracting the private sector, operationalizing the DCGRF, and improving coordination between national and local institutions with the aim to increase national capacities of host countries. As a result of strengthened national capacities, the SIPA Team presented an innovative transition model as a long-term, durable solution to support Syrian refugees and host communities in 3RP host countries: “compatible communities”.