Hamdan v. Rumsfeld

The US Supreme Court has finally ruled in the case of Hamdan v. Rumsfeld, and decided that the military tribunals used to try "enemy combatants" at Guantanamo are fundamentally unfair and violate both US and international law. In the process, they also ruled that the Geneva Conventions' Common Article 3 (which provides minimum standards of treatment for any prisoner, and bans both torture and kangaroo courts) applies to the "war on terror" (which means that the US's preferred methods of interrogation have just been ruled a war-crime by its own top court). It is a stunning victory for the rule of law - and for American values.

SCOTUSblog has the details here and here.