FILE - This combo of three file photographs shows, Venezuela's National Assembly President Diosdado Cabello, left, President Hugo Chavez and Vice President Nicolas Maduro. Chavez is due to be sworn in for a new term on Jan. 10, 2013, and his closest allies still aren't saying what they plan to do if the ailing leader is unable to return from a Cuban hospital to take the oath of office. While the president's allies so far appear united, analysts have speculated that differences might emerge between factions led by Maduro, Chavez's chosen successor, and Cabello, who is thought to wield power within the military and who would be in line to temporarily assume the presidency until a new election can be held. (AP Photo/Ariana Cubillos, Natacha Pisarenko, Files)

Associated Press
FILE - This combo of three file photographs shows, Venezuela's National Assembly President Diosdado Cabello, left, President Hugo Chavez and Vice President Nicolas Maduro. Chavez is due to be sworn in for a new term on Jan. 10, 2013, and his closest allies still aren't saying what they plan to do if the ailing leader is unable to return from a Cuban hospital to take the oath of office. While the president's allies so far appear united, analysts have speculated that differences might emerge between factions led by Maduro, Chavez's chosen successor, and Cabello, who is thought to wield power within the military and who would be in line to temporarily assume the presidency until a new election can be held. (AP Photo/Ariana Cubillos, Natacha Pisarenko, Files)
FILE - This combo of three file photographs shows, Venezuela's National Assembly President Diosdado Cabello, left, President Hugo Chavez and Vice President Nicolas Maduro. Chavez is due to be sworn in for a new term on Jan. 10, 2013, and his closest allies still aren't saying what they plan to do if the ailing leader is unable to return from a Cuban hospital to take the oath of office. While the president's allies so far appear united, analysts have speculated that differences might emerge between factions led by Maduro, Chavez's chosen successor, and Cabello, who is thought to wield power within the military and who would be in line to temporarily assume the presidency until a new election can be held. (AP Photo/Ariana Cubillos, Natacha Pisarenko, Files)
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