CARACAS (AFP) - Venezuelan President Hugo Chavez travelled to Cuba late Saturday to begin a fourth round of chemotherapy to treat his cancer, saying it would "most likely be the last" round in the treatment. The Venezuelan leader left for Cuba to begin treatment on Sunday and he is expected to return midweek. Chavez, who had a tumour removed June 20 in Havana, has expressed confidence it would be his last before his "full recovery." Morales is also travelling to Cuba for a two-day visit that will include "a working meeting" with Cuban leader Raul Castro, and to receive an honorary doctorate, Cuban state media said.