Venezuela's President Hugo Chavez arrives at the international airport in Cancun, February 21, 2010. Photo: REUTERS/Gerardo Garcia

Venezuela's Vice President Nicolas Maduro announces the death of President Hugo Chavez, in Caracas. Photo: REUTERS/VTV

Venezuela's President Hugo Chavez (L) visits his Cuban counterpart Fidel Castro in Havana in August, 2006. Photo: REUTERS/Estudios Revolucion-Granma/Handout/Files

Venezuela's President Hugo Chavez shows the pistols of independence hero Simon Bolivar during a ceremony to mark his birthday in Caracas in July, 2012. Photo: REUTERS/Carlos Garcia Rawlins

U.S. President Barack Obama (L) greets his Venezuelan counterpart Hugo Chavez before the opening ceremony of the 5th Summit of the Americas in Port of Spain in April, 2009. Photo: REUTERS

Venezuela's President Hugo Chavez salutes militia members as he arrives for a ceremony to commemorate the eighth anniversary of his return to power after a brief coup, in Caracas in April, 2010. Photo: REUTERS/Carlos Garcia Rawlins

Venezuela's President Hugo Chavez greets supporters while appearing with his daughters Rosa (L) and Maria on a balcony of Miraflores Palace soon after his return to the country from Cuba, where he underwent surgery and treatment for cancer, in Caracas in July, 2011. Photo: REUTERS/Carlos Garcia Rawlins

Venezuela's President Hugo Chavez wears an army uniform and the red beret of his parachute regiment while attending a military parade in Caracas in April, 2005. Photo: REUTERS/Jorge Silva

Venezuela's President Hugo Chavez holds a new Russian Kalashnikov assault rifle in June, 2006. Photo: REUTERS