Please, explain Imam's perception of "Ijtihad" and "Substantial Ijtihad"?

Imam Khomeini remembered martyrs on Nowruz

Imam Khomeini, the late founder of the Islamic Revolution used to remember the sacrifices rendered by martyrs for the divine purpose.

Imam Khomeini Was a Great Caliber of Mystic: Senegalese Academic

A Senegalese academic says Imam Khomeini; the founder of the Islamic Republic has had a special status among mystics and is loved by people across the African continent and beyond.

Unity Among Divine Religions Vital

Imam used to maintain that the unity among all divine religions was vital for the progress of the entire human society.

Charlie Hebdo Being Denounced Across Globe

Imam Khomeini, the founder of the Islamic Republic, was a great champion of unity among all religious schools of thought and wanted them to take unified stance against imperial and aggressive powers.

Unity to Resolve all Hurdles of Muslim World

Secretary of the World Forum for Proximity of the Islamic Schools of Thoughts says that unity can solve all problems facing the Muslim world.

Imam Khomeini Released Congratulatory Messages on Christmas

Imam sent messages of congratulations on eve of Christmas during his historic stay in the French capital Paris and he continued this pattern even after victory of the Islamic Revolution in Iran.

Imam Khomeini emphasized on cultural independence

Imam Khomeini, the founder of the Islamic Republic advised authorities and mass public to attach a great special significance to the cultural and education issues of the nation.