Muslim world are: Saudi Arabia, Pakistan, Afghanistan, Iran, Mauritania, and Yemen. Other states where Islam is the politically defined state religion are: Egypt, Jordan, Iraq, Kuwait, Algeria, Malaysia, Maldives, Morocco, Libya, Tunisia, United Arab Emirates, Somalia and Brunei. Other Muslim-majority countries include: Niger, Indonesia, Sudan, Bosnia and Herzegovina, Sierra Leone, Djibouti, Albania, Azerbaijan, Bangladesh, Burkina Faso, Chad, The Gambia, Guinea, Kazakhstan, Kosovo, Kyrgyzstan, Mali, Northern Cyprus, Nigeria, Senegal, Syria, Lebanon, Tajikistan, Turkmenistan, Turkey and Uzbekistan. More than 24.1% of the world's population is Muslim. Current estimates conclude that the number of Muslims in the world is around 1.8 billion. Muslims are the
Muslim world according to the Sunnah should be selected based on ٍShura (consultation), as was done at the Saqifah which selected Abu Bakr, Muhammad's father-in-law, to be Muhammad's political but not his religious successor. Shia, on the other hand, believe that Muhammad designated his son-in-law Ali ibn Abi Talib as his true political as well as religious successor. The overwhelming majority of Muslims in the world, between 87–90%, are Sunni. Shias and other groups make up the rest, about 10–13% of overall Muslim population. The countries with the highest concentration of Shia populations are: Iran – 96%, Azerbaijan – 85%, Iraq –