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Proliferation Security Initiative (PSI)

Proliferation Security Initiative (PSI)


The Proliferation Security Initiative (PSI) provides the international community with the practical means of cooperating, consistent with national and international law and frameworks, to prevent illicit trafficking in weapons of mass destruction (WMD), their delivery systems and related materials.

Since its launch in 2003, over 100 countries have endorsed the PSI Statement of Interdiction Principles. The core objectives of the PSI Principles, which all participating countries publicly support, are to complement the objective of UNSC Resolution 1540 of helping prevent WMD proliferation.

PSI Exercises

A priority for Australia, and all PSI participants, is to maintain and refine capabilities for interdicting WMD-related trade. Countries participating in PSI activities have developed their maritime, air and ground interdiction capabilities through a program of joint training exercises in Europe, Asia and North America. These exercises are designed to:

  • enhance operational responsiveness by testing national interdiction capacities
  • improve mechanisms for conducting joint interdiction operations with other countries
  • bridge differences in training and operational systems and allow policy experts, enforcement agents operational personnel to learn to work together in a cooperative and collaborative manner

Australia participates in the annual Asia-Pacific Exercise Rotation (APER) – an enduring flagship activity of the PSI in the Asia-Pacific.

Operational Experts Group

Within the PSI framework, 21 states, including Australia, form the Operational Experts Group (OEG) which plays an essential role in ensuring the effectiveness of the PSI by:

  • leveraging related counter proliferation efforts
  • contributing customs, law enforcement, military and other security experts and assets to interdiction exercises
  • hosting PSI meetings, workshops, and exercises with other PSI-endorsing states
  • working with specific partner states to improve their capacity to combat the proliferation of WMDs

More information of the PSI can be found on the PSI website.

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