I agree with his conclusion:
Unlawful belligerency, whether as terrorist warfare or in some other form, may become a familiar and ugly facet of modern life. The executive branch is best equipped to devise rules for this emerging though not entirely unprecedented problem, with oversight provided by Congress. The judicial branch is least equipped to answer these questions, but has taken a rapid lead. A pragmatic response to terrorism will require the systematic presentation of a clearly articulated set of customary rules of war. These must be established without further delay.
I agree.
Specifically, why not treat them as pirates -- and hang them?