TEHRAN, June 22 (MNA) Irans Rouhani has said Heroic leniency has been harder than heroic Jihad, what Imam Hassan did with the peace agreement with Muawiyah bin Abu Sufyan. At the opening session ofSibt-un-Nabi International Congress in Tehran, president Rouhani said that today we need to learn ways to unity and peace following Imam Hassans path....