PSUV says Chavez won't swear oath of office immediately The Socialist Party of Venezuela (PSUV), represented by Aristobulo Isturiz, governor of Anzoategui State, told journalists on Monday Hugo Chavez was starting a new phase of treatment after his surprise return to Venezuela. Isturiz brushed off speculation Chavez is set to swear the presidential oath of office imminently to end the current constitutional grey area over who is ruling the country, saying that the permission given him by the National Assembly to leave his presidential duties for cancer treatment in Cuba remained in place. Images and soundbites.