A crackdown on mass demonstrations in Iran has killed more than 500 people, according to a US-based rights group. Protests that started in Tehran last month have spread to more than 100 cities and towns across every province. US President Trump has said that the US could strike the Iranian regime if it kills protesters. DW speaks to Marina Miron, military analyst from King's College London on what military options the US has on the table to weaken Iran. #iranprotests #trumpstrikes #uscentcom