Venezuela President Hugo Chavez embraced antiwar activist Cindy Sheehan on national television and announced his plot to bring the U.S. to its knees.

"Enough of imperialist aggression," Chavez said. "We must tell the world: Down with the U.S. empire. We have to bury imperialism this century. Cindy, we are with you in your fight."

For her part, Sheehan told Chavez she agreed with singer activist Harry Belafonte that President Bush is "the greatest terrorist in the world."

But is it all just hot air? What can Chavez really do to hurt the U.S.?