Smith’s comments came on the same that a major bomb killed up to 10 in the holy Shiite city of Karbala. The blast occurred at the gate to a major Shiite shrine, the Imam Hussein mausoleum. An aide to Shiite leader Grand Ayatollah Sistani was among the wounded. The bombing marks the first serious attack in Karbala in several months. It came on the first day of campaigning for the Jan. 30 election to pick a 275-member National Assembly. In Washington President Bush warned Iran and Syria not to interfere in the Iraqi elections.