If she was referencing a drone strike I’d be all for this and it wouldn’t be out of line with something Pres. Trump would have done. Sadly, it appears she wants boots on the ground as a first resort.
OK, we could bomb and invade Iran. It would be a hard fight but we could win that one, but what if Russia and China say no and come to Iran’s aid? We have WW III and that one if not a shoe in. Russia has been lining up allies, putting spies into our land. They may have nukes here even. Iran might have done the same. We could be facing a real problem—WW III we could lose and with it our Superpower status and a blow to the American psychology. Defeat would be a bitter pill to swallow, occupation by Chinese troops would be hard. No, we are not ready for WW III.