Nuclear capabilities refer to a country's ability to develop, produce, and deploy nuclear weapons. This includes the technology and infrastructure needed for uranium enrichment, plutonium production, and the design of nuclear warheads. Countries with nuclear capabilities can deter threats and influence global politics through their military strength. Additionally, nuclear capabilities often involve a delivery system, such as intercontinental ballistic missiles (ICBMs) or submarine-launched ballistic missiles (SLBMs), which allow for the effective use of nuclear weapons. International treaties, like the Non-Proliferation Treaty (NPT), aim to prevent the spread of these capabilities and promote disarmament among nuclear-armed states.