Number: RS21881
Title: Proliferation Security Initiative (PSI)
Authors: Sharon A. Squassoni, Foreign Affairs, Defense, and Trade Division 
Abstract: The Proliferation Security Initiative (PSI) is now three years old. Initially, 11 nations pledged their cooperation in interdicting shipments of weapons of mass destruction-related (WMD) materials; more than 70 nations now support PSI. Many observers believe PSI's "strengthened political commitment of like-minded states to follow through" is a successful approach to countering proliferation, although details about PSI are sketchy. The 109th Congress has introduced eight bills supporting PSI. The State Department credits PSI with halting 11 WMD-related transfers from 2004 to 2005, and more than 2 dozen from 2005 to 2006.
Pages: 6
Date: September 14, 2006