President Masoud Pezeshkian condemns killing of Iran's supreme leader as 'a great crime', according to his office.
Protest erupted following assassination of Iran's Supreme Leader Ayatollah Ali Khamenei in joint US and Israeli strike.
Supreme leader killed in US-Israeli strikes; IRGC pledges fierce retaliation across the region.
Conservative opposition to war on Iran remains minimal as hawks heap praise on Trump for bombing, killing Khamenei.
War with Iran contradicts the US president's own criticism of regime change policies in the Middle East, analysts say.
Democratic lawmakers have largely condemned the strikes on Iran, emphasising the lack of congressional approval.
New Yorkers protested Saturday hours after US President Donald Trump ordered a wave of deadly strikes on Iran.
Iranian Ambassador to the United Nations, Amir-Saeid Iravani denounced US-Israeli military strikes across the country.
Republicans largely rally behind Trump's strikes on Iran, while Democrats fail to offer singular message of opposition.
Interior Ministry official says 66 missiles were fired at Qatar, and there were 114 reports of falling shrapnel.