In this photo taken April 19, 2012, Colombia's President Juan Manuel Santos waits for the arrival of Spain's Prime Minister Mariano Rajoy at the presidential palace in Bogota, Colombia. Santos said on Monday, Oct. 1, 2012, he suffers from prostate cancer and he will undergo surgery next Wednesday at a clinic in Bogota. (AP Photo/Fernando Vergara)

Associated Press
In this photo taken April 19, 2012, Colombia's President Juan Manuel Santos waits for the arrival of Spain's Prime Minister Mariano Rajoy at the presidential palace in Bogota, Colombia. Santos said on Monday, Oct. 1, 2012, he suffers from prostate cancer and he will undergo surgery next Wednesday at a clinic in Bogota. (AP Photo/Fernando Vergara)
In this photo taken April 19, 2012, Colombia's President Juan Manuel Santos waits for the arrival of Spain's Prime Minister Mariano Rajoy at the presidential palace in Bogota, Colombia. Santos said on Monday, Oct. 1, 2012, he suffers from prostate cancer and he will undergo surgery next Wednesday at a clinic in Bogota. (AP Photo/Fernando Vergara)
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