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In this picture provided Tuesday, Dec. 11, 2012 by Cuba's state newspaper Granma, Cuba's President Raul Castro, right, receives Venezuela's President Hugo Chavez at the Jose Marti International airport in Havana, Cuba, Monday, Dec. 10, 2012. Chavez arrived in Cuba on Monday for a fourth cancer-related operation after designating the vice president as his political heir. (AP Photo/Granma)

Associated Press
In this picture provided Tuesday, Dec. 11, 2012 by Cuba's state newspaper Granma, Cuba's President Raul Castro, right,  receives Venezuela's President Hugo Chavez at the Jose Marti International airport in Havana, Cuba, Monday, Dec. 10, 2012.  Chavez arrived in Cuba on Monday for a fourth cancer-related operation after designating the vice president as his political heir. (AP Photo/Granma)
In this picture provided Tuesday, Dec. 11, 2012 by Cuba's state newspaper Granma, Cuba's President Raul Castro, right, receives Venezuela's President Hugo Chavez at the Jose Marti International airport in Havana, Cuba, Monday, Dec. 10, 2012. Chavez arrived in Cuba on Monday for a fourth cancer-related operation after designating the vice president as his political heir. (AP Photo/Granma)
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