In order for Iran to take Israel conventionally, they'd need to take Iraq. In order to take Iraq, they'd need to take us out, both ground and naval forces. Since it's become apparent that they're sending missiles to hezbollah via Syria, we already know that they are actively involved with Israel. The only way for them to go is deeper; they'll not withdraw or back down.
Since they can't use subterfuge or technology to sneak past us to get directly to Israel, They are possibly going to attempt to bog us down on the ground, and maybe punch a hole in our naval forces. A nuclear attack on a carrier would be a possibility. It would at least allow them a window.
You and I are on the same page.
Remember Theayatollah Khomenei's ( piss be upon him) old addage:
"The road to Jerusalem begins in Baghdad"