Kerry and Gephardt Supporters Connected To Bush-Like Attack Ad on Dean

The spot opens with a Time magazine cover featuring Osama bin Laden as synthesizer music seemingly out of a post-apocalyptic science fiction movie is heard.

As the camera focuses on Mr. bin Laden's eyes. the following words flash on the screen: "Dangerous World," "Destroy Us," "Dangers Ahead" and "No Experience."

"Americans want a president who can face the dangers ahead," an announcer intones. "But Howard Dean has no military or foreign policy experience. And Howard Dean just cannot compete with George Bush on foreign policy. It's time for Democrats to think about that — and think about it now."

The advertisement is the latest salvo in what amounts to a "stop Dean" campaign sponsored by the new Democratic group, Americans for Jobs, Health Care and Progressive Values.

The group's president, Edward F. Feighan, a former Ohio congressman, donated $2,000 to the campaign of Representative Richard A. Gephardt of Missouri, records show, and its treasurer, David Jones, has worked as a fund-raiser for Mr. Gephardt. Its spokesman, Robert Gibbs, recently resigned as the press secretary for Senator John Kerry of Massachusetts, another presidential candidate.

The mystery about who is financing the group, which began its efforts about two weeks ago with an advertisement highlighting past support for Dr. Dean from the National Rifle Association, infuriated Dr. Dean's campaign staff.

"Whoever is behind this should crawl out from underneath their rock and have the courage to say who they are," said Tricia Enright, a spokeswoman for Dr. Dean. "It is hateful, it's cynical, it's exactly the kind of ad that keeps people from voting, that keeps people from getting involved in the process."