The Inter-Services Intelligence (ISI) is Pakistan's primary intelligence agency, responsible for national security and intelligence. It was established in 1948 to strengthen information sharing between the military branches. The ISI is the largest of Pakistan's five intelligence services and is headed by a three-star general from the army. It collects, analyzes, and classifies intelligence to support the government and conducts espionage, propaganda, and other secret operations both inside and outside of Pakistan. The ISI recruits from both military and civilian sectors and has faced attacks and casualties as it has targeted terrorist groups within Pakistan.