--In today's NCO environment, the task of conducting Intelligence Surveillance and Reconnaissance (ISR) related operations is increasingly being accomplished through multinational coalition teams. One such example of ISR operations is persistent surveillance to protect ground forces operating in the battlefields and peacekeeping areas, for functions such as border site surveillance, main supply route (MSR) monitoring, and base/camp site protection. In these contexts, there is a strong need for capabilities that enhance the effectiveness of coalition operations. Although the coalition has unified goals for any specific mission, each member of the coalition may have additional goals and policies that may not be fully shareable with other coalition partners. While the coalition partners may be employing complementary ISR technologies to achieve mission success, each coalition partner must want to protect a subset of its assets and interests given that some of their mission goals may actually be competing. Therefore, the fusion of information from ISR assets needs to be constrained by interoperability, trust, policies, and other factors such as cultural barriers. The fusion technologies to support coalition ISR fusion must consider optimizing the information that is transmitted to each coalition partner in order to achieve a balance between the overall mission objectives and national objectives under various joint operations and individual national policy constraints. This special session focuses on the technology and tools required to improve mission success through persistent surveillance acquired by fusion of disparate ISR assets owned by a multi-national coalition.