The Department of Defense has been sued by Hogan and Hartson over documents relating to the U.S. military's cooperation agreement with Kuwait. This article analyzing the complaint by the N.Y. Sun's Josh Gerstein quotes me about the uphill battle plaintiff's will have in getting the court to overturn the government's classification decision.
Update: As soon as the lawsuit was filed, it seems to be over. According to the NY Sun, the lawsuit was dropped due to Kuwait's displeasure over the prospect of the agreement being made public. The article also gives background as to what they agreement was sought in the first place.