Racism in South Africa at which he lectured on the global spread of racial stereotypes through US film. Pink tide: 2000–2006 Mired in economic problems, Cuba was aided by the election of Hugo Chávez to the Venezuelan Presidency in 1999. Castro and Chávez developed a close friendship, with the former acting as a mentor and father-figure to the latter, and together they built an alliance that had repercussions throughout Latin America. In 2000, they signed an agreement through which Cuba would send 20,000 medics to Venezuela, in return receiving 53,000 barrels of oil per day at preferential rates; in 2004, this trade was stepped up, with Cuba sending 40,000 medics and Venezuela providing 90,000 barrels a day. Some economic problems remained; in 2004, Castro shut down 118 factories, including steel plants, sugar mills and paper processors to compensate for a critical shortage of fuel. In September 2005, Castro established a group of medical professionals, known as the Henry Reeve Brigade, with the mission of international medical solidarity. The group were sent throughout the world to carry out humanitarian missions on behalf of the Cuban government. Cuba and Venezuela were the founding members of the Bolivarian Alternative for the Americas (ALBA). ALBA's origins lay in a December 2004 agreement signed between the two countries, and was formalized through a People's Trade Agreement also signed by Evo Morales' Bolivia in April 2006. Castro had also been calling for greater Caribbean integration since the late 1990s, saying that only strengthened cooperation between Caribbean countries would prevent their domination by rich nations in a global economy. Cuba has opened four additional embassies in the Caribbean Community including: Antigua and Barbuda, Dominica, Suriname, Saint Vincent and the Grenadines. This development makes Cuba the only country to have embassies in all independent countries of the Caribbean Community. In contrast to the improved relations between Cuba and a number of leftist Latin American states, in 2004 it broke off diplomatic ties with Panama after centrist President Mireya Moscoso pardoned four Cuban exiles accused of attempting to assassinate Castro in 2000. Diplomatic ties were reinstalled in 2005 following the election of leftist President Martín Torrijos. Castro's improving relations across Latin America were accompanied by continuing animosity towards the US. However, after massive damage caused by Hurricane Michelle in 2001, Castro successfully proposed a one-time cash purchase of food from the US while declining its government's offer of humanitarian