India and Iran have had a long relationship stretching back to ancient times. Iranian (or Persian) influence has produced a deep imprint upon Indian art, poetry, architecture and literature. With periodic invasions, military adventures and constant cross-migrations between the two empires, the people of Iran and northern India share many cultural and ethnic characteristics.
In the 21st century, the relations between these two great nations must be framed along the lines of geo-politics and oil, rather than art and culture.
Although India was greatly worried by the 1979 revolution in Iran that toppled the Shah and established an Islamic state, New Delhi and Teheran have generally enjoyed good relations. That tie became stronger with India’s insatiable appetite for energy in tandem with western sanctions that have pressured Iran to find customers for its crucial oil exports.
Indeed, India -which criticized the sanctions by the U.S., United Nations and European Union – recently became Iran’s top oil buyer.
Full article: Iran And India: A Tangled Web Of Oil And Geopolitics (International Business Times)