Why do some individuals become terrorists? Why do some choose to travel overseas to become foreign fighters and others remain home to engage in political violence? More than academic, the answers to these questions inform a central component of U.S. national security strategy: countering violent extremism. This report addresses the topic of radicalization - or individual motivations to engage in political violence - in Yemen. This report uses data from focus groups and a national survey conducted during the spring of 2016. Yemen is in the midst of a civil war. In the wake of the collapse of the government of Tunisia in 2011, Yemeni protesters took to the streets in major cities to protest the reelection of thenPresident Ali Abdullah Saleh. After protracted negotiations by the Gulf Cooperation Council (GCC), Abd Rabbuh Mansur Hadi, who was Saleh's vice president, took over the presidency in February 2012. By then, the internal strife had gained momentum. The Houthis, who had fought several wars against Saleh's forces, had used the unrest to expand from their stronghold in the Sa'ada governorate. They eventually seized the capital of Sana'a in September 2014. President Hadi and his forces retreated to Aden and southern Yemen, but the Houthis pushed south and assaulted Adens international airport in March 2015. The civil war had begun.