If the US starts a bombing campaign in Iran, ground operations are as inevitable as night following day. Iran will respond to an attack. They will shoot back at any place that has has US troops in range. They will shoot back at our Navy. They will at least temporarily close the Persian Gulf to shipping. Invasion will then be necessary for force protection. Invasion in this case is inevitable.
Two girls killed in head-on collision in Israel's north (Haaretz)
from the article: U.S. army chief: Iraq war has sapped ability to fight Iran