A man walks past banners installed along the roadside of Iran's slain supreme leader Ayatollah Ali Khamenei (L) and of supreme leader Ayatollah Mojtaba Khamenei, in Tehran on April 29, 2026. US President Donald Trump on April 29 warned Iran to "better get smart soon" as efforts by Washington and Tehran to end hostilities appeared at a standstill. (Photo by ATTA KENARE / AFP via Getty Images) /