Celebrations broke out in Tehran on Thursday night as a landmark framework agreement for a nuclear deal between Iran and world powers was announced.
Videos posted on social media showed cars driving through the streets of Tehran with honking horns and passengers clapping.
Twitter posts described people dancing in the streets of north Tehran and passing out sweets. Some posted pictures of a small gathering in front of the Ministry of Foreign Affairs.
In one video posted on Facebook, a group of women can be heard clapping and chanting "Thank you, Rouhani." in praise of President Hassan Rouhani.
The framework agreement is likely to boost Rouhani's popularity among the millions of young Iranians who voted for him in 2013.