- The USA eventually declares some arbitrary "victory" condition.
- Iran will be left even poorer, and much less able to defend itself conventionally, but will remain under the same regime. Very likely they give up cooperating with atomic energy inspectors and do what North Korea did to a acquire weapons.
- Israel's ability to dictate US foreign and military policy will be degraded long term. What many commentators do not see is how anti-Israel younger consevatives trend in the US now. It will be decades or before a serious anti-Israel republican candidate will be fielded, but it is inevitable, and even your typical greatest-ally-wall-kissers will have to moderate themselves.
Will be very interesting to see what the mid terms bring. Some on the American right are already talking about voting democrat to protest - MAGA was specifically sold to them as an antidote to necon middle eatern entanglements.