The document summarizes the history and phases of the Pakistan Muslim League Nawaz (PMLN) political party. It describes the party's origins in the All India Muslim League before partition. It then outlines the party's three phases of achieving and holding power in the national government of Pakistan from 1990-1997, 1997-1999, and 2013-2017. However, on each occasion Nawaz Sharif's term as Prime Minister was cut short due to conflicts with other institutions like the President and military. Despite facing challenges, the PMLN under Nawaz Sharif accomplished significant infrastructure projects including the Metro bus network and supported the military's counterterrorism operation Zarb-e-Azb.