There's already a procedure for evaluating classification of information, a built-in system for declassifying things after a particular period of time, and procedures for whistle blowers to follow when something is inappropriately classified or merely inappropriate. ("Alert the media" or "leak this to wikileaks" is, generally, a very-very-very last resort.)

I don't understand the classification of past missile strikes, but I'd bet someone who knows the list of classification criteria could explain it. (Or, if it's inappropriately classified, challenge it through the proper channels.)