The NPT is an international treaty that aims to prevent the spread of nuclear weapons by prohibiting non-nuclear-weapon states from acquiring or developing nuclear weapons.

The United States was the first country to develop and detonate a nuclear weapon, with the Trinity test in New Mexico in 1945.

Nuclear proliferation refers to the spread of nuclear weapons or nuclear technology from one country to another, either through direct transfer or through the acquisition of nuclear materials or technology by non-state actors.

The IAEA is responsible for monitoring compliance with the NPT and verifying that nuclear materials and technology are not being diverted for military purposes.

Nuclear deterrence is the policy of maintaining a nuclear arsenal as a deterrent against attack by an adversary, with the goal of preventing war through the threat of mutually assured destruction (MAD).

The United States is believed to possess the largest nuclear arsenal in the world, with an estimated 5,550 nuclear warheads.

Nuclear disarmament refers to the process of reducing or eliminating nuclear weapons and nuclear technology, with the goal of achieving a world free of nuclear weapons.

The Biological Weapons Convention (BWC) prohibits the development, production, and stockpiling of biological weapons, as well as the transfer of biological weapons or related technology to other countries.

The Chemical Weapons Convention (CWC) prohibits the development, production, and stockpiling of chemical weapons, as well as the transfer of chemical weapons or related technology to other countries.

Nuclear blackmail refers to the use of nuclear weapons or the threat of their use to achieve political or military objectives, such as coercing an adversary into submission or preventing an attack.

The Comprehensive Nuclear-Test-Ban Treaty (CTBT) prohibits nuclear weapon tests in all environments, including underground, underwater, and in the atmosphere.

Nuclear sharing refers to the transfer of nuclear weapons or nuclear technology from one country to another, often in exchange for political or economic concessions, with the recipient country agreeing to share the benefits of nuclear technology while relying on the nuclear arsenal of the provider country for deterrence.

The IAEA is responsible for promoting cooperation in the peaceful uses of nuclear energy, including the development of nuclear power plants, the use of nuclear technology in medicine and agriculture, and the safe management of nuclear waste.

Nuclear deterrence is the policy of maintaining a nuclear arsenal as a deterrent against attack by an adversary, with the goal of preventing war through the threat of mutually assured destruction (MAD).

Russia is believed to possess the second largest nuclear arsenal in the world, with an estimated 6,257 nuclear warheads.