Since 2003, ninety-eight states have become participants in the Proliferation Security Initiative (PSI) by endorsing the Statement of Interdiction Principles. In doing so, these states have committed to undertake effective measures, either alone or in concert with other states and in support of UN Security Council Resolutions, for interdicting the illicit transfer or transport of WMD, their delivery systems, and related material to and from states and non-state actors of proliferation concern. To support this commitment, PSI-endorsing states have engaged in many activities to establish a more coordinated and effective basis for conducting interdictions. All countries participate in PSI activities on a voluntary basis, consistent with their national legal authorities and relevant international law and frameworks.
Recognizing the continuing threat of WMD proliferation and the need to evolve our measures to counter it; consistent with the above principles; and leveraging the experience and expertise gained in eight years of PSI activities, PSI Operational Experts Group Countries acknowledge the benefit of undertaking this cooperative and voluntary effort to offer support to all PSI-endorsing states in strengthening their critical interdiction capabilities and practices. OEG countries who volunteer to participate in the CCP effort will do so by identifying and sharing tools and resources that support interdiction related activities and by conducting events in a coordinated manner to develop, implement, and exercise CCPs.