Do the Republicans want to leave Iraq ever?

I get the need to withdraw from Iraq in an orderly manner that protects our troops and preserves whatever gains we've made. But, isn't it a bit odd that we're "negotiating" with the Iraqi government over whether, and when, we're ever going to be leaving Iraq? Basically, the "negotiating" positions are:

1. Iraq: Buh-bye
2. US: No

I just find it odd that we're "not an occupying force," but at the same time, the government in power, that we're supposedly there to help, has to "negotiate" our withdrawal, rather than just being able to tell their friend that it's time to go. Not to mention, the very fact that we're negotiating, and clearly opposing the Iraqi government position, which is "please leave," suggests that Bush and McCain really don't want us to leave Iraq for a long time. And just look at how upset Bush and McCain are with Obama, and Maliki, ever since their positions fused as one. It's as though the Republicans are simply don't want to leave Iraq, ever.