Why should the US or Israel be involved in a strike? Remember history where the world (yes.. Eu, US, Israel, China, Russia) supplied war between Iraq and Iran with weapons and intelligence. Now the US is gone from Iraq (now you know why!) way is open for a battle inside Iraq that can expand towards Iran. Iraq will be supplied with equipment to bomb the nuclear sites. Do you really think US or Israel will start a bombing? NO way.... smarter options are available.
from the article: Iran opens ten-day military exercise in the Persian Gulf