Isn't that interesting? Months ago, the Obama Administration revealed that it would target al-Awlaki. It even managed to wriggle out of a lawsuit filed by his father to prevent the assassination.
But the actual legal reasoning the Department of Justice used to authorize the strike? It's secret. Classified. Information that the public isn't permitted to read, mull over, or challenge.
Why? What justification can there be for President Obama and his lawyers to keep secret what they're asserting is a matter of sound law? This isn't a military secret. It isn't an instance of protecting CIA field assets, or shielding a domestic vulnerability to terrorism from public view. This is an analysis of the power that the Constitution and Congress' post September 11 authorization of military force gives the executive branch.
This is a president exploiting official secrecy so that he can claim legal justification for his actions without having to expose his specific reasoning to scrutiny. As the Post put it, "The administration officials refused to disclose the exact legal analysis used to authorize targeting Aulaqi, or how they considered any Fifth Amendment right to due process."