IRNA � President Hassan Rouhani opened the 30th International Islamic Unity Conference here on Thursday.

The theme of the Islamic conference is unity and the need for fighting Takfiri terrorist groups.

Over 300 domestic and foreign guests, a number of Ulema from different countries and 220 prominent figures from across the Islamic World have participated in the international Islamic event.

The three-day International Islamic Unity Conference is to review problems faced by the Islamic Ummah and find appropriate solutions to address such issues.

The participating countries include Malaysia, Russia, Indonesia, Iraq, Lebanon, Thailand, Algeria, Britain, the United States, Australia, Tunisia, China and Egypt.

Happening at the same time, is the first international Islamic unity's film festival presenting works from 37 world states.