Iranians celebrate Hassan Rouhani's election as president
16 June 2013 Last updated at 09:38 BST
Thousands of Iranians have taken to the streets of Tehran, shouting pro-reform slogans and hailing Hassan Rouhani's election as president.
The reformist-backed cleric who won just over 50% of the vote, described his win as a "victory of moderation over extremism".
World Affairs Editor John Simpson reports.