What had been Imam Khomeini’s status before becoming the founder of Islamic Revolution?

How did Imam Khomeini boost unity among all Muslim denominations?

Imam Khomeini boosted unity among Iraqi tribes, ethnic and religious groups

A reputed scholars say that Imam Khomeini had been widely respected by all Iraqi people regardless of their religious or ethnic affiliation because the great leader of the Muslim world unity among Sunnis and Shias.

Scholars' views participating at 35th Islamic unity conference in Tehran

Every year millions of Muslims across the planet celebrate the birth of Prophet Muhammad. Sunni and Shia denominations celebrate this event on two different dates within the same week. The interval between these two dates is annually commemorated as the Islamic Unity Week.

Muslims, devotees observe birthday anniversary of Holy Prophet and Imam Jafar al-Sadiq (PBUH) ...

Shia Muslims celebrate the birthday anniversary of the Holy Prophet of Islam (PBUH) as well as Imam Jafar al-Sadiq (PBUH) on 17th Rabi' al-awwal. Imam Khomeini once said, "Here is a land of The Holy Prophet (peace be upon him and his household). This land belongs to Imam Sadiq.”

Leader says Muslim unity is no ‘tactical issue’ but ‘definitive Quranic duty’

Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei says the unity of Muslims is a "definite duty and a Qur'anic order", adding some regional governments' decision to normalize ties with the Israel is a "great sin and mistake".

Friday prayers leaders, scholars and intellectual of Sunni Muslims visit Jamaran complex

How did Imam Khomeini come up with idea of unity week?