Washington — Pentagon officials have made detailed preparations for deploying U.S. ground forces into Iran, multiple sources briefed on the discussions told CBS News. Senior military commanders have submitted specific requests aimed at preparing for such an option as President Trump weighs moves in the U.S.-Israel-led conflict with Iran, the sources said. Mr. Trump has been deliberating whether to position ground forces in the region, sources said on condition of anonymity because they were not authorized to speak publicly. It was unclear under what circumstances he would authorize the use of troops on the ground."No, I'm not putting troops anywhere,"...