This report includes background information on Bolivia’s political unrest, economic situation, and relations with the United States. In the past few years, Bolivia has experienced extreme political unrest resulting in the country having six presidents since 2001. Under policies of recently-elected leftist-leaning President Evo Morales, Bolivia's relations with neighboring countries, foreign investors, and the United States have been complicated. For some 20 years, U.S. interest in Bolivia has centered on its role as a coca producer and its relationship to Colombia and Peru, the two other major coca- and cocaine-producing countries in the Andes. U.S.-Bolivian relations have become tense in 2006 in the wake of the Morales government's questionable commitment to combating illegal drugs, increasing ties with Venezuela and Cuba, and the nationalization measure.