Why are uranium enrichment and nuclear-fuel reprocessing closely regulated by international agreements?

Uranium enrichment and nuclear-fuel reprocessing are subject to strict international regulation because both processes can serve as pathways for the development of nuclear weapons.12

• Uranium Enrichment: While commercial nuclear reactors typically use low-enriched uranium, the technology required to enrich uranium to the higher levels necessary for weapons production is a significant proliferation concern.13
• Reprocessing: This process separates plutonium from spent nuclear fuel. Because this plutonium can be diverted for use in weapons, the technology is heavily guarded and monitored.14

Due to these risks, these steps in the nuclear fuel cycle are governed by international treaties, such as the Treaty on the Non-Proliferation of Nuclear Weapons. Oversight bodies like the International Atomic Energy Agency are tasked with monitoring nuclear programs and inspecting facilities to ensure that atomic energy is used exclusively for peaceful purposes and not for military advancement. Maintaining these safeguards is a fundamental ethical imperative to prevent the catastrophic consequences of nuclear proliferation and to uphold global security.152