Bangladesh followed by 86.6 percent of the population. The country is home to most Bengali Muslims, the second-largest ethnic group in the Muslim world. Most Bangladeshi Muslims are Sunni, followed by Shia and Ahmadiya. About four percent are non-denominational Muslims. Bangladesh has the fourth-largest Muslim population in the world, and is the third-largest Muslim-majority country (after Indonesia and Pakistan). Sufism has a lengthy heritage in the region. The largest gathering of Muslims in Bangladesh is the Bishwa Ijtema, held annually by the Tablighi Jamaat. The Ijtema is the second-largest Muslim congregation in the world, after the Hajj. Hinduism is followed by
Pakistan and the Organisation of Islamic Cooperation with the OIC. Pakistan and the Organisation of Islamic Cooperation Pakistan continues to enjoy a privileged status in the Organisation of Islamic Cooperation (OIC, formerly the Organisation of the Islamic Conference). In terms of population, it is the OIC's second largest member. Being the only Muslim country with nuclear weapons, having the seventh-largest standing military force, through research at NESCOM and DESTO and a large labour workforce working in various Muslim countries, play a role in its prominence. It was under the pretext of the 2nd summit of OIC held in Lahore between 22–24 February 1974, that Pakistan recognised the