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.
Demographics of Yemen
Religion in Yemen consists primarily of two principal Islamic religious groups: 53% of the Muslim population is Sunni and over 45% is Shia, according to the UNHCR. Other put the numbers of Shias at 30%. Sunnis primarily adhere to the Shafi'i school, and there are also significant followers of the Maliki and Hanbali schools. Shias are primarily Zaidi and also have significant minorities of Twelver and Ismaili Shias.