The Russian Federation possesses the world's largest arsenal of nuclear weapons, with 5,459 nuclear warheads, with 1,718 deployed. It also inherited the expansive Soviet biological and chemical weapons programs, and is suspected to have continued them. It is one of the five nuclear-weapon states recognized under the Treaty on the Non-Proliferation of Nuclear Weapons and one of the five countries wielding a nuclear triad. It inherited its weapons and treaty obligations from the Soviet Union. Russia has been alleged to violate the Biological Weapons Convention and Chemical Weapons Convention.