The neocons initially claimed the invasion was necessary because of an imminent threat of an attack of mass destruction by Saddam Hussein, but when it became known that was untrue after the invasion, after trying out a few new excuses, they settled on 'bringing democracy to Iraq.'

They never admitted the real goal was the greater Israel project.

https://www.globalresearch.ca/greater-israel-the-zionist-plan-for-the-middle-east/5324815

The goal is to keep Iraq destabilized, so Israel can dismantle it and eventually occupy it.

This was the Zionist goal before Israel was officially a state, and the greater Israel outline can be found on one of the flags of the terrorists groups who formed the Likud party (the Irgun).