 "We welcome fuel exchange, nuclear co-operation, building of power plants and reactors and we are ready to co-operate," he said in a live broadcast on state television.He added that Iran would not retreat "one iota" on its right to a sovereign nuclear program.According to Brussels-based NGO International Crisis Group, Ahmadinejad has been criticized for attacking private "plunderers" and "corrupt officials," while engaging in "cronyism and political favouritism".