Protesters set fire to the Iranian consulate in the Iraqi city of Najaf in a show of anger against Tehran’s involvement in the country’s affairs, raising the risk of a more forceful response from security forces to end a monthslong antigovernment uprising. Protesters broke into the consulate’s perimeter, tore down the Iranian flag and set fire to the building in the early hours of Thursday, according to Iraqi state TV. It said security forces responsible for protecting the consulate had evacuated diplomats from the…