In April 1978, the communist People's Democratic Party of Afghanistan (PDPA) seized power in a bloody coup d'état against then-President Mohammed Daoud Khan, in what is called the Saur Revolution. The PDPA declared the establishment of the Democratic Republic of Afghanistan, with its first leader named as People's Democratic Party general secretary Nur Muhammad Taraki. This would trigger a series of events that would dramatically turn Afghanistan from a poor and secluded (albeit peaceful) country to a hotbed of international terrorism. The PDPA initiated various social, symbolic and land distribution reforms that provoked strong opposition, while also brutally oppressing political dissidents. This caused unrest and quickly expanded into a state of civil war by 1979, waged by guerrilla ''mujahideen'' (and smaller Maoist guerrillas) against regime forces countrywide. It quickly turned into a proxy war as the Pakistani government provided these rebels with covert training centers, the United States supported them through Pakistan's Inter-Services Intelligence (ISI), and the Soviet Union sent thousands of military advisers to support the PDPA regime. Meanwhile, there was increasingly hostile friction between the competing factions of the PDPA – the dominant Khalq and the more moderate Parcham.