Pennsylvania Senator Rick Santorum says the United States is engaged in a new world war against Islamic fascism. He says many Americans won't say so for fear of offending Muslims. Santorum says terrorist attacks worldwide, the war in Iraq and Israel's fight against Iran-backed Hezbollah are all battlefronts in a war that Americans will either win or lose, but cannot avoid. Santorum is opposed to the Iranian regime, but does not support military action against the country. He says he favors legislation would punish countries that aid Iran's nuclear program and that encourage pro-democracy groups in Iran.Santorum is embroiled in a tough re-election fight against state Treasurer Bob Casey and has consistently trailed in the polls. A spokesman for Casey said Santorum's speech was him rubber-stamping President Bush's agenda.