Reformist-backed cleric Hassan Rouhani has won Iran's presidential election, securing just over 50% of the vote and so avoiding the need for a run-off. Tehran Mayor Mohammad Baqer Qalibaf was well behind in second place. Turnout was estimated at 72.2% among the 50 million Iranians who were eligible to vote to choose a successor to Mahmoud Ahmadinejad.Supreme Leader Ayatollah Ali Khamenei is scheduled to ratify the vote on 3 August.The new president will then take the oath in parliament. Bbc