What is the Iranians' response to criticisms from Trump over its missile testing, and is it fuelling terror and conflicts in the Middle East? Zeinab Badawi speaks to Iranian academic Mohammed Marandi from Tehran, a staunch supporter of the leadership in Iran. Amidst his pronouncements on foreign policy Donald Trump has ratcheted up the rhetoric on Iran, calling the nuclear agreement with Tehran the 'worst deal ever negotiated'. He's expanded US sanctions on Iran after it tested a missile in January.