The largest US military build-up in Iran since 2003

This week US and Iranian delegations failed to make a breakthrough that could avert potential US strikes amid a massive military build-up. The threat of those strikes saw New Zealand's Foreign Minister Winston Peter's reiterate official advice for New Zealanders to leave Iran. Pressure is mounting on Iran externally and internally. This week anti-government protests spread to at least 13 universities. Susie speaks to Ross Harrison, Senior Fellow at the Middle East Institute in Washington DC and author of "Decoding Iran's Foreign Policy" on whether we are edging closer to a peaceful outcome through diplomacy or to a US attack on Iran.