Latin America's leaders: Who's who Here, ahead of a regional summit in Havana this week, are some of the region's most influential leaders on both the left and right ends of the political spectrum. Alejandro Ernesto/AFP/Getty Images Cuba: Raúl Castro Born: June 3, 1931 Took office: Feb. 24, 2008 Since taking over from his brother Fidel in 2006, Raúl, 82, has instituted a series of market-driven changes, allowing Cubans to start small businesses, buy and sell their homes and own cars without special permission. Jorge Silva/Reuters Venezuela: Nicolás Maduro Born: Nov. 23, 1962 Took office: April 19, 2013 The handpicked successor of Hugo Chávez, who died last March. Chávez pushed through radical economic and political changes during his 14-year rule, and Maduro is now struggling to carry forward his socialist vision. Matilde Campodonico/AP Uruguay: José "Pepe" Mujica Born: May 20, 1935 Took office: March 1, 2010 A former Tupamaro guerrilla who spent 14 years in a military prison during the 1970s and "80s, Mujica has become the Pope Francis of Latin American presidents. His candor and conspicuously spartan lifestyle have made him a widely popular figure in the region. His government legalized marijuana last year. Jose Jacome Ecuador: Rafael Correa Born: April 6, 1963 Took office: Jan. 15, 2007 Correa is among the leftist Latin American populists who have steered their countries away from U.S. influence and plowed his nation's resource wealth into social programs. His approval ratings are among the highest in the region. Argentina: Cristina Fernández de Kirchner Born: Feb. 19, 1953 Took office: Dec. 10, 2007 Fernández won reelection by a huge margin in 2011, but her popularity has slumped along with Argentina's sputtering economy. Steffen Schmidt Brazil: Dilma Rousseff Born: Dec. 14, 1947 Take office: Jan. 1, 2011 A former Marxist guerrilla jailed by the military dictatorship in the 1970s, Rousseff was handpicked by her predecessor, Brazil's charismatic president Luiz Inacio Lula da Silva. Her popularity has recovered since the huge protests her government faced last year. Claudio Reyes Chile: Michelle Bachelet (incoming) Born: Sept. Scheduled to take office: March 11, 2014 Bachelet, whose father was murdered by former dictator Gen. Augusto Pinochet and who was tortured herself as a young activist, returns to the presidency after a landslide victory in November. A moderate, she's under pressure to push Latin America's top economy further left. Ruben Sprich Colombia: Juan Manuel Santos Born: Aug. 10, 1951 Took office: Aug. 7, 2010 Santos was Colombia's defense chief under his conservative predecessor Álvaro Uribe, and remains a key U.S. ally in Latin America. He's moved toward the center during his tenure in office, engaging in peace talks with FARC guerrillas. He's running for re-election in May. Laurent Gilleron Mexico: Enrique Peña Nieto Born: July 20, 1966 Took office: Dec. 1, 2012 Peña Nieto has returned the long-ruling Institutional Revolutionary Party (PRI) to Mexico's presidency after a 12-year absence, and during his first year he's implemented many pro-business policies that were once associated with the right. Enrique Castro-Mendivil/Reuters Peru: Ollanta Humala Born: June 27, 1962 Took office: July 28, 2011 A former army officer, Humala has assuaged worries that he'd take Peru on a radical turn to the left. The economy has sizzled during his presidency thanks to a mining boom, and he's backing the United States" push for a Pacific Rim free trade agreement.