The next “shock and awe” campaign may never drop a single bomb. It’s been 20 years since black-and-green footage of Baghdad under attack flashed across television screens worldwide, broadcasting the explosive U.S.-led push to unseat Saddam Hussein and dismantle the Iraqi civil and military service. The overwhelming show of strength represented the largest international military effort since World War II and the biggest U.S. operation since the Vietnam War. The air campaign relied on 1,800