The authors of the Standford-NYU, along with their complaints about drones, have also called for greater transparency and democratic accountability around the program (HT - Andrew Sullivan). Just like "auditing the Fed" it sounds lovely and democratic and nice, but this is an active front of a war. You're not violating democratic principles to keep the details confidential any more than we are violating democratic principles by not trumpeting what banks are facing problems or disclosing CIA ops or publishing grandma's medical consumption (that's Medicare! that's a public program! democratic accountability!).
We ought to have a vigorous public debate about drones, but you don't disclose the war strategy while the war is on.
Democratic accountability means an informed public, but democratic accountability also means that our elected representatives have an obligation to professionally provide for the public defense, and that means not disclosing the details of active military operations.