One year after the disputed Iran election that returned President Ahmadinejad to office, many say the revolution and the regime have lost legitimacy. Green Movement opposition leaders, who called off a rally, are facing growing criticism of their tactics.
In the wake of its disputed election, Iran faces diminished support from some friends and hardening opposition among foes.
The president's ties to military and security forces, as well as his hardline foreign policy, are among the factors cited for his support from the country's supreme leader.
Despite street violence on Saturday that officially claimed 13 lives, opposition leader Mir Hussein Mousavi again on Sunday called for the June 12 election results to be annulled.