In the context of the 10-Point Plan, a key objective of cooperative arrangements among partners is to ensure that migration policies are both effective and “protection-sensitive”, that is, they take into account the needs of all persons who travel as part of mixed movements, including asylum-seekers, refugees, victims of trafficking, unaccompanied and separated children and other groups.As opposed to the other action points of the 10-Point Plan, which outline tools for developing practical, protection-sensitive responses to mixed movements within a particular subject area, the theme of this chapter, “Cooperation among Key Partners”, provides an overarching methodology for addressing mixed movements. Most of the examples in the 10-Point Plan involve more than one actor and demonstrate how cooperation can be operationalized to address mixed movements in that specific area. By contrast, the examples presented in this chapter focus broadly on cooperation at the national, regional and international levels across several or all aspects of mixed movements.