This is, presumably, modeled similarly to Baghdad's Grand Mosque and served the same service of positive propaganda for Saddam. It is the biggest mosque in Mosul. Still under construction. (Who knows when/if it'll ever get done...I think a new contractor has taken the project back up under the "al-Rahman" designation).
Source: http://phlebotomus.blogspot.com/2004_11_01_phlebotomus_archive.html