How Iran's role in Middle East boomed since 1979 revolution

Iran’s Revolutionary Guard was established in the wake of the Islamic Revolution 40 years ago to protect its ideals.

Since then, its role has expanded making it a powerful institution with influence both within Iran's political leadership and beyond the country’s borders.

The Guard's efforts in Syria, Iraq, Lebanon, and elsewhere have given Iran a place in Middle Eastern political affairs.

Al Jazeera's Zeina Khodr reports from Tehran.