PARP is a biennial process that is open to all Partnership for Peace (PfP) partners. Following the review of NATO’s partnerships policy in April 2011, participation was also opened to all other partners on a voluntary and case-by-case basis subject to NAC approval. Countries that wish to join NATO must participate in the PARP as a pre-requisite to join the Membership Action Plan (MAP). The MAP provides advice, assistance and practical support tailored to the individual needs of countries wishing to join the Alliance. However, participation in the MAP does not prejudge any decision by the Alliance on future membership.
The PARP also provides a planning mechanism for Euro-Atlantic partners that are European Union (EU) members to assist them in developing capabilities for both NATO-led and EU-led operations.