New Ansar Al Islam Video A Bogus?

(Ansar al Islam)
An insurgent video obtained by CBS news and produced by the Iraqi group Ansar al Islam may have been staged. The 31-minute video entitled "Defenders of the Home" claims to show an attack on the headquarters of the Iraqi National Guards in Miqdadiyah
The video opens with shots from the preparation for the operation, followed by large number of heavily armed militants attacking what appears to be an abandoned building. No Iraqi soldiers were shown throughout the entire video.