Democratic presidential candidate Hillary Rodham Clinton defended her vote in the Senate earlier this year to dub the Iranian Revolutionary Guard a terrorist organization. Speaking at an Iowa campaign event Monday, Clinton said the vote was made to kick-start diplomatic talks and drive economic sanctions against the guard, which she said "is deeply involved in all of the commercial activity in Iran." Clinton has been criticized by some of her rivals for her support of the resolution, which they said could lead to war. Clinton said that is not the case. "It's very important that we prevent President Bush from trying to take this country to war against Iran," she said.