Armed Houthis under the banner of Ansar Allah took control of Yemen’s capital Sanaa by force on September 11, 2014. This date represented a milestone on the path of changes witnessed by Yemen in the recent past and whose features were outlined from the beginning of 2011. This paper considers the factors and reasons that led to the fall of Yemen to the Houthis, such as the nature of the various divisions in Yemen, the roles of the army, former president Ali Abdullah Saleh, Al Qaeda, the truth about the conflict between the Houthis and the Islah Party, the dispute between president Abd Rabbuh Mansour Hadi and prime minister Mohammed Salim Basindawa, the role of the Gulf states and Iran, and the ambitions of the Houthis. The paper also touches upon the outcome of the conflict and the future of Yemen in light of continued Houthi efforts to spread their control over the biggest possible part of the country.