CARACAS (Reuters) - Hugo Chavez is upbeat about recovering from cancer and confident in his medical team, his No. 2 said on Tuesday in the latest message from the Venezuelan leader's sickbed in Cuba. "He told us with great strength: 'I am very optimistic, I trust completely in the treatments I am undergoing, I will beat this again. I'm holding onto Christ and life,'" Vice President Nicolas Maduro said of Chavez's words to him on a recent visit. ...