internecine

internecine - adj - Of or relating to conflict within a nation, an organization or a group; mutually destructive; involving or accompanied by mutual slaughter; deadly; destructive

Armageddon comes to mind.

I was reading this article (http://money.cnn.com/magazines/fortune/fortune_archive/2007/05/28/100033867/index.htm) today which talks about patent Armageddon, a situation in which companies sue each other into oblivion over patent infringement issues.

In some ways the precipitation of hostilities during the Cold War could have been described in the same way.

Dire, no matter how you cut this one.

cui bono

cui bono - n - Utility, advantage, or self-interest considered as the determinant of value or motivation.

I couldn't find a really satisfactory definition. This is generally seen as a question and might best be translated as, "Who benefits?" or "Who profits?"

I'm campaigning for a new holiday: Siete de Junio, commemorating the French army's occupation of Mexico City in 1863.