Lyse Doucet: Under fragile ceasefire, Iranians wonder if US deal can be done

Banners stretching over highways display portraits of three supreme leaders since the 1979 revolution. These leaders include Ayatollah Ruhollah Khomeini, Ayatollah Ali Khamenei, who was assassinated in the war's first salvos, and his successor, Mojtaba Khamenei, who was seriously injured in the attack and has not been seen or heard in public since then.