Here is Nidal Hasan's PowerPoint presentation about Islam, Muslims, and the military. Note the copious quoting of the Koran; the explanation of the doctrine of abrogation (citing Koran 2:106 and 16:101), which usually Islamic apologists in the West dismiss as an invention of "Islamophobes"; and the explanations of defensive and offensive jihad.
Islamic spokesmen in the U.S., if anyone asks them to comment on this at all, will dismiss it as an "extremist" interpretation of Islam and claim that no Muslims in the U.S., not one, believe in this understanding of Islam. But I guarantee you that none of the, not one, will offer a specific alternative explanation of the verses he cites, or of his doctrine of jihad, or of his understanding of Islam.
If anyone does come across an attempt, or the appearance of an attempt, to refute Nidal Hasan's Koranic exegesis, please send it to me at director[at]jihadwatch.org, and I will happily feature and discuss it here.
UPDATE: Here is a pdf of the slides (thanks to Joe).