British Prime Minister Tony Blair said yesterday that the entire world must act against the weapons of mass destruction that Iraq has amassed. He said that it must not stand passively by as it did in the case of Afghanistan. Blair, visiting in Australia, said that the world waited too long to act regarding Afghanistan, allowing the terrorists to act freely and without fear. He did not say, however, whether Iraq would in fact be the next target in the U.S.-led war against terrorism.