Iran's Supreme Leader Ayatollah Ali Khamenei congratulated Iranian people on the high turnout.
Some thoughts from Iran analyst Suzanne Maloney:
Syrian President Bashar al-Assad has congratulated Rohani on his reelection, the hard-line Fars news agency reports.
Tehran, long Damascus's staunchest ally, has sent senior military advisers and thousands of "volunteers" to help Assad's regime battle armed opposition fighters and an array of other anti-regime forces since fighting broke out in Syria in 2011. Iran has also even allowed the use of its military facilities to Russian warplanes conducting bombing raids in Syria to prop up Assad.
Good point: