Iraq announced a curfew, weapons ban, border closings and other security measures Saturday to clamp down ahead of next weekend's key constitutional referendum and prevent insurgent attacks. "We will protect those who say yes and those who say no," Interior Minister Bayan Jabr said in Baghdad. "We have countermeasures against all terrorist actions, and you will see tens of thousands of Iraqi security forces deployed in Baghdad and the provinces." On Thursday - two days ahead of the vote - a nationwide nighttime curfew will begin and nobody will be able to carry weapons in public, even if they are licensed, Jabr said. On Friday evening, police will bar travel between provinces. International borders, airports and ports also will be closed, but Jabr did not say when that step would begin, according to a report of The Associated Press.