Another US attack in Pakistan

I'm just amazed that US attacks on camps inside Pakistan get so little mention.

What appears to have been a missile attack killed more than 20 people in the North Waziristan tribal region of Pakistan close to the Afghan border on Tuesday, Pakistani security officials said.

And, of course, the obligatory initial denial that the US is behind the attack.

Later: William Arkin argues that this may be a "secret" new Spec ops weapons system that involves ground missiles guided by drones.