Iranian President Hassan Rouhani on Monday warned against "excessive demands" by world powers at nuclear talks due to resume in Geneva in two days, a government website reported. "At the recent Geneva talks good progress was made but everyone must realise that excessive demands could complicate the process towards a win-win agreement," Rouhani said.  Iran is to enter a new round of talks with the P5+1 group of nations in Geneva on Wednesday, after the two sides failed to clinch a deal in high-level, marathon negotiations earlier this month.