Trump Steps Up Rhetoric against Iran, Threatens Iraq Sanctions

US President Donald Trump ratcheted up his rhetoric with Iran and Iraq late on Sunday, warning of a "major retaliation" if Iran strikes back to avenge the US assassination of one of its top military commanders and threatening sanctions on Iraq after its parliament called on American troops to leave the country.

Asked on Air Force One about potential retaliation by Iran, Trump said: "If it happens, it happens. If they do anything, there will be major retaliation."

Al Jazeera's Gabriel Elizondo reports live from Washington, DC.