Iranians again face a U.S. travel ban imposed by President Donald Trump, with the decision drawing anger, frustration and some shrugs given the decades of tensions between the countries.

WASHINGTON: President Donald Trump's sweeping new travel ban came into effect early Monday immediately after midnight, barring citizens from a dozen nations from entering the United States

Trump has justified the bans by citing security risks, including a recent incident in Colorado involving an Egyptian national, although Egypt is not on the banned list.