Shia–Sunni relations
Shia–Sunni discord in Iraq starts with disagreement over the relative population of the two groups. According to most sources, including the CIA's "World Factbook", the majority of Iraqis are Shia Arab Muslims (60%-70%), and Sunni Arab Muslims represent between 32% and 37% of the population. However, Sunni are split ethnically among Arabs, Kurds and Turkmen. Many Sunnis hotly dispute their minority status, including ex-Iraqi Ambassador Faruq Ziada, and many believe Shia majority is "a myth spread by America". One Sunni belief shared by Jordan's King Abdullah as well as his then Defense Minister Shaalan is that Shia numbers in Iraq were inflated by Iranian Shias crossing the border. Shia scholar Vali Nasr believes the election turnout in summer and December 2005 confirmed a strong Shia majority in Iraq.
Baghdad
As early as 2003, about 20 percent of the population of the city was the result of mixed marriages between Shi'ites and Sunnis: they are often referred to as "Sushis". Following the sectarian violence in Iraq between the Sunni and Shia militia groups during the U.S. occupation of Iraq, the city's population became overwhelmingly Shia. Despite the government's promise to resettle Sunnis displaced by the violence, little has been done to bring this about. The Iraqi Civil War following ISIS' invasion in 2014 caused hundreds of thousands of Iraqi internally displaced people to flee to the city. The city currently has Sunni, Shia, Assyrian/Chaldean/Syriacs, Armenians and mixed neighborhoods.