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.

US president Trump's expanded travel ban, effective Monday, restricts entry for citizens from 12 countries, primarily in Africa and the Middle East. T

U.S. President Donald Trump's order banning citizens of 12 countries from entering the United States goes into effect at 12:01 am ET (0401 GMT) on Monday, a move the president promulgated to protect the country from "foreign terrorists.