Which two groups continue to clash in Iraq, even after the overthrow of Saddam Hussein?

Lebanese and Syrians

Sunnis and Shiites

Israelis and Palestinians

Muslims and Jews

It would appear that it is mostly a religious civil war between the Sunni Muslims and the Shiite Muslims. The Israelis are too busy fighting the Palestinians on home turf, and the Jews are mostly set up in Israel, fighting the Palestinians. The Lebanese and the Syrians have very friendly relations with each other, so the only answer left is ...

Sunnis and Shiites.