The right to keep an bear arms, RKBA, or right to bear arms is the concept that people, individually or collectively, have a right to weapons. Today this is usually interpreted to mean personal guns or the arming of a state militia. This is an important concept in the United States of America, where the right is protected in the Second Amendment to the United States Constitution, drafted in 1791, and where the right derived from popular conceptions of English law around the American Revolution, including a tradition of local militias, a common law right to possess weapons, the English Bill of Rights (1689) and a statute, the Assize of Arms, dating back to 1181. Provisions for or abridgments of the right also appear in Mexican, medieval, Israeli, Spanish, Cuban, and Chinese cultures.