Islamic republic in the context of "Pakistan Day"

The Arab conquest of Iran, which culminated in the fall of the Sasanian Empire to the nascent Rashidun Caliphate, brought about a monumental change in Iranian society by purging Zoroastrianism, which had been Iran’s official and majority religion since the time of the Achaemenid Empire. Since the Rashidun invasion, Islam (in any form) has consistently held the status of Iran's official religion except for a short period in the 13th century, when the Mongol invasions and conquests destroyed the Abbasid Caliphate and smaller Islamic realms before resulting in the establishment of the Ilkhanate. The process by which Iranian society became integrated into the Muslim world took place over many centuries, with nobility and city-dwellers being among the first to convert, in spite of notable periods of resistance, while the peasantry and the dehqans (land-owning magnates) took longer to do so. Around the 10th century, most Persians had become Muslims.

Between the 7th century and the 15th century, Sunni Islam was the dominant sect in Iran, and Iranian academics of this period contributed greatly to the Islamic Golden Age. In the 16th century, the newly enthroned Safavid dynasty initiated a massive campaign to install Shia Islam as Iran's official sect, aggressively proselytizing the faith and forcibly converting the Iranian populace. The Safavids' actions triggered tensions with the neighbouring Sunni-majority Ottoman Empire, in part due to the flight of non-Shia refugees from Iran. It is estimated that by the mid-17th century, Iran had become a Shia-majority nation. Over the following centuries, with the state-fostered rise of an Iran-based Shia clergy, a synthesis was formed between Iranian culture and Shia Islam that marked each indelibly with the tincture of the other. Later, under the Pahlavi dynasty, Islamic influence on Iranian society was rolled back in order to assert a new Iranian national identity—one that focused on pre-Islamic Iran by shedding more light on Zoroastrian tradition and other aspects of ancient Iranian society, particularly during the Achaemenid era. However, in 1979, the Islamic Revolution brought about yet another monumental change by ending the historic Iranian monarchy and replacing it with an Islamic republic.

East Pakistan was the eastern province of Pakistan between 1956 and 1971, restructured and renamed from the province of East Bengal and covering the territory of the modern country of Bangladesh. Its land borders were with India and Burma, with a coastline on the Bay of Bengal. To distinguish this region from India's state West Bengal (which is also known as "Indian Bengal"), East Pakistan was known as "Pakistani Bengal". East Pakistanis were popularly known as "Pakistani Bengalis". In 1971, East Pakistan became the newly independent state Bangladesh, which means "country of Bengal" or "country of Bengalis" or "land of Bengalis" in the Bengali language. In standard meaning, "desh" refers to a country, but in Bangla local expressions, "desh" also means one's village or countryside, hometown, ancestral heritage, homeland, and they do not have to be a politically formed sovereign country.

East Pakistan was formed with West Pakistan at the reorganization of One Unit Scheme orchestrated by the 3rd prime minister of Pakistan, Mohammad Ali. The Constitution of Pakistan of 1956 replaced the Pakistani monarchy with an Islamic republic. Bengali politician H.S. Suhrawardy served as the Prime Minister of Pakistan between 1956 and 1957 and a Bengali bureaucrat Iskander Mirza became the first President of Pakistan. The 1958 Pakistani coup d'état brought general Ayub Khan to power. Khan replaced Mirza as president and launched a crackdown against pro-democracy leaders. Khan enacted the Constitution of Pakistan of 1962 which ended universal suffrage. By 1966, Sheikh Mujibur Rahman emerged as the preeminent opposition leader in Pakistan and launched the six-point movement for autonomy and democracy. The 1969 uprising in East Pakistan contributed to Ayub Khan's overthrow. Another general, Yahya Khan, usurped the presidency and enacted martial law. In 1970, Yahya Khan organised Pakistan's first federal general election. The Awami League emerged as the single largest party, followed by the Pakistan Peoples Party. The military junta stalled in accepting the results, leading to civil disobedience, the Bangladesh Liberation War, 1971 Bangladesh genocide and persecution of Biharis.

The Islamic Republic of Afghanistan was a presidential republic in Afghanistan from 2004 to 2021. The state was established to replace the Afghan interim (2001–2002) and transitional (2002–2004) administrations, which were formed after the 2001 United States invasion of Afghanistan that had toppled the partially recognized Taliban-ruled Islamic Emirate of Afghanistan. However, on 15 August 2021, the country was recaptured by the Taliban, which marked the end of the 2001–2021 war, the longest war in US history. This led to the overthrow of the Islamic Republic, led by President Ashraf Ghani, and the reinstatement of the Islamic Emirate under the control of the Taliban, today the ruling government of Afghanistan. While the United Nations still recognizes the Islamic Republic as the legitimate government of Afghanistan, this toppled government controls no portion of the country. The US–Taliban deal, signed on 29 February 2020 in Qatar, was one of the critical events that caused the collapse of the Afghan National Security Forces (ANSF). Following the deal, the US dramatically reduced the number of air attacks and deprived the ANSF of a critical edge in fighting the Taliban insurgency, leading to the Taliban takeover of Kabul.

Following the September 11 attacks, the United States and several allies invaded Afghanistan, overthrowing the Taliban's first government (which had limited recognition) in support of the opposition Northern Alliance. Afterwards, a transitional government was formed under the leadership of Hamid Karzai. After the 2003 loya jirga, a unitary presidential Islamic republic was proclaimed under a new constitution, and Karzai was elected for a full term as president. Meanwhile, the US-led international coalition helped maintain internal security, gradually transferring the burden of defense to the Afghan Armed Forces after 2013–14.

Ruhollah Musavi Khomeini (17 May 1900 – 3 June 1989) was an Iranian cleric, politician, political theorist, and revolutionary who founded the Islamic Republic of Iran and served as its first supreme leader from 1979 until his death in 1989. He was the main leader of the Iranian Revolution, which overthrew Mohammad Reza Pahlavi and transformed Iran into a theocratic Islamic republic.

Born in Khomeyn, in what is now Iran's Markazi province, his father was murdered when Khomeini was two years old. He began studying the Quran and Arabic from a young age assisted by his relatives. Khomeini became a high ranking cleric in Twelver Shi'ism, an ayatollah, a marja' ("source of emulation"), a mujtahid or faqīh (an expert in fiqh), and author of more than 40 books. His opposition to the White Revolution resulted in his state-sponsored expulsion to Bursa in 1964. Nearly a year later, he moved to Najaf, where speeches he gave outlining his religiopolitical theory of Guardianship of the Jurist were compiled into Islamic Government.

India and Pakistan have a complex and largely hostile relationship that is rooted in a multitude of historical and political events, most notably the partition of British India in August 1947.

Two years after World War II, the United Kingdom formally dissolved British India, dividing it into two new sovereign nations: the Union of India and Pakistan. The partitioning of the former British colony resulted in the displacement of up to 15 million people, with the death toll estimated to have reached between several hundred thousand and one million people as Hindus and Muslims migrated in opposite directions across the Radcliffe Line to reach India and Pakistan, respectively. In 1950, India emerged as a secular republic with a Hindu-majority population. Shortly afterwards, in 1956, Pakistan emerged as an Islamic republic with a Muslim-majority population.

The people of Mauritania are overwhelmingly adherents of Sunni Islam, of the Maliki school of jurisprudence.

The country’s Islamic identity is deeply tied to its political system: Mauritania is constitutionally an Islamic Republic, and Islamic law has a major influence on its legal and social frameworks.

One of the most dramatic changes in government in Iran's history was seen with the 1979 Iranian Revolution where Shah Mohammad Reza Pahlavi was overthrown and replaced by Ayatollah Ruhollah Khomeini. The authoritarian monarchy was replaced by a long-lasting Shiite Islamic republic based on the principle of guardianship of Islamic jurists, (or Velayat-e faqih), where Shiite jurists serve as head of state and in many powerful governmental roles. A pro-Western, pro-American foreign policy was exchanged for one of "neither east nor west", said to rest on the three "pillars" of mandatory veil (hijab) for women, and opposition to the United States and Israel. A rapidly modernizing capitalist economy was replaced by a populist and Islamic economy and culture.

The leader of the revolution and founder of the Islamic Republic, Ayatollah Ruhollah Khomeini, was the Supreme Leader of Iran until his death in 1989. He was followed by Ali Khamenei.