War and Peace
I would rather have seen Saddam's sons captured and tried for crimes against their people instead of killed. The equivalent of the Nuremburg trials for the Ba'athists would set a good precedent for the importance of the rule of law in a newly democratic Iraq.

Will their deaths help to end the insurgency? That sounds more like a wish from the administration's spin machine than anything else. If the present insurgency is nothing more than a series of guerilla attacks by Saddam's supporters, then it wasn't really much of a threat because it obviously lacks popular support (proof: the celebrations in the Baghdad streets upon confirmation of their deaths). But if it's something more - like a slowly growing popular rebellion against a foreign invader - it isn't going to make any real difference.