Proliferation Security Initiative

The Proliferation Security Initiative (PSI) is an international effort to prevent the spread of weapons of mass destruction, like nuclear, chemical, or biological weapons. Countries collaborating under PSI share intelligence, inspect ships and cargo, and coordinate actions to stop the transfer of these dangerous arms across borders. The goal is to prevent countries or groups from acquiring weapons that could threaten global security. It relies on voluntary cooperation and legal agreements but does not replace official law enforcement or military authority. Overall, PSI enhances international capacity to intercept proliferation activities before they reach their destination.