The Department of Peacekeeping Operations (DPKO) has been assisting in the reform of individual components of the security sector, such as police services, for decades.
Since 2007, DPKO has focused on supporting those efforts at the strategic level and in a holistic way, across all components.

DPKO’s Security Sector Reform Unit (SSRU), part of the Office of Rule of Law and Security Institutions, is the SSR focal point and technical capacity for the UN system as well as for national and international partners. The unit has responsibility for:

• providing political, strategic and technical assistance to peace operations involved in supporting national SSR efforts;
• supporting senior UN leaders to ensure SSR is integrated into the UN’s overall work;
• Acting as a global centre of excellence through the development of guidance and international norms;
• Developing SSR partnerships for the UN.

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