Imam Khomeini
He was the leader of the Islamic Revolution and the founder of the Islamic Republic of Iran. He believed in the principle of Vilayat-e Faqih in an Islamic society, especially during the absence of infallible Imam. Based on this principle, he considered, fighting against oppression, efforts to establish the system of the Islamic Republic with the rule of the Islamic Jurist, as one of the most important duties of Muslims.
Through his speech and actions, Imam Khomeini always invited Muslims towards unity.
Imam Khomeini (RA): "What brings nations together and a nation must evolve from it; is Islam".
Islam is a single nation, and Islamic countries are close to each other like the neighborhoods of a city, and as per the Islamic rules, everyone is obliged to be united with each other. In Islam, things like race, group, category, language, etc., are not important. Islam is for everyone and for the welfare of everyone, and according to the commandments of Qur'an and Islam, we are all brothers and are not separated from each other.