Former Iranian political prisoner Salman Sima and Iranian journalist Negar Mojtahedi speak to NDTV on the escalating unrest in Iran, alleging mass killings, internet blackouts, and severe repression by the regime. As questions mount over the impact of US tariff threats announced by Donald Trump, both guests urge the international community to move beyond sanctions and invoke the Responsibility to Protect, warning that delays could cost thousands more lives under Supreme Leader Ali Khamenei's rule.