IRNA Minister of Foreign Affairs Mohammad-Javad Zarif has in his twitter account extended congratulations in Arabic language on the birth anniversary of the holy Prophet of Islam (PBUH) and the unity week.
The idea of Unity Week--the birth anniversary of the Holy Prophet (PBUH), which is on the 12th of Rabi al-Awwal according to Sunni scholars and the 17th of Rabi al-Awwal according to Shia scholars--came by the founder of the Islamic Republic and father of the Islamic Revolution the late Imam Khomeini.