The President of Yemen Has Decided to Step Down(?)

Or so says the Wall Street Journal.

Yemeni President Ali Abdullah Saleh has accepted a political deal brokered by neighboring Arab countries that would have him step down from power after 30 days in exchange for immunity for himself and his close relatives, according to a presidential aide.

I suppose this will drive oil prices up.  Everything that happens in the Mid East does.  Why shouldn’t this?