After establishment of its own deterrent force, the "Force de Dissuassion", more commonly known as the "Force de frappe", France withdrew from the military command structure of NATO in 1966. De Gaulle viewed the operational establishment of the Mirage IV fleet, a critical component of the independent "Force de frappe", as highly influential to his decision to withdraw France from NATO, and that an independent French nuclear deterrent was necessary to ensure independence as a nation. From 1964 to 1971, the Mirage IV was France's sole means of delivering nuclear ordnance. At this point they were each armed with a single 60 kiloton nuclear bomb.