Law enforcement is the responsibility of the Afghan National Police (ANP), which is part of the Ministry of Interior Affairs. The ANP consists of two primary branches, the Afghan Uniformed Police and the Afghan Border Police. The mission of the Uniformed Police was to ensure security within Afghanistan, prevent crime, and protect property. The Border Police was responsible for securing and maintaining the nation's borders with neighboring states as well as all international airports within the country. Afghanistan's intelligence agency, the National Directorate of Security (NDS), assists the ANP with security matters. Despite that, all parts of Afghanistan are considered dangerous due to militant activities and terrorism-related incidents. Kidnapping for ransom and robberies are common in major cities. Every year hundreds of Afghan police were killed in the line of duty. Afghanistan was also the world's leading producer of opium. Afghanistan's opium poppy harvest produces more than 90% of illicit heroin globally, and more than 95% of the European supply. The Afghan Ministry of Counter Narcotics was responsible for the monitoring and eradication of the illegal drug business.