The decreased military budgets following the end of the Cold War forced both the Army and Army Aviation to downsize. Army Aviation's response was to develop the "Aviation Restructure Initiative", a plan to decrease the size of the force while continuing to provide a capable, ready force. By the late 1990s, continuing deficiencies and unintended results of the ARI led to a series of aviation plans as key pieces of the Army-wide modernization and transformation. In 2003, the Aviation Branch assumed overall responsibility for unmanned aerial vehicles within the Army. Operations since Desert Storm showed the versatility and flexibility of Army Aviation. Examples were uses of AH-64 Apaches in peacekeeping operations in the Balkans as a deterrent to mobs threatening fellow citizens or paramilitary groups trying to remove weapons from agreed cantonments. The beginning of the Global War on Terrorism in 2001 drew Army Aviation again into ongoing combat. Events in Afghanistan and Iraq have reaffirmed the qualities that caused the creation of Organic Army Aviation in 1942.