Alfonso Cano is the "nom de guerre" of Guillermo León Sáenz is an important ideological leader of the FARC-EP ("Fuerzas Armadas Revolucionarias de Colombia - Ejército del Pueblo"). It has been speculated the Cano would eventually be in line for assuming the position currently known to be held by FARC's Manuel Marulanda. After the death of former ideological leader Jacobo Arenas in August 1990 he soon became the ideological leader of the group. Wikipedia
The definitive Wikipedia entry for Alfonso Cano. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Alfonso_Cano