Pakistan - The Pakistani military has played an influential role in mainstream politics throughout Pakistan's history, (Politics of Pakistan) with military presidents ruling from 1958–71, 1977–88 and from 1999 onwards. The leftist Pakistan People's Party (PPP), led by Zulfikar Ali Bhutto, emerged as a major political player during the 1970s. Under the military rule of Muhammad Zia-ul-Haq, Pakistan began a marked shift from the British-era secular politics and policies, to the adoption of Shariat and other laws based on Islam.