Yemen is undergoing a lot of chaos now. This morning President Saleh even offered to leave office by the end of 2011, but the protesters aren't buying it and more of the military is defecting to their side. On Monday several army commanders left the government and joined the protesters; one of them is from Saleh's clan. This follows the shooting of dozens of protesters on Friday.
Saleh is now saying that Yemen could descend into civil war. And he's probably right. There are already problems with AQAP, the Houthis in the north, and separatists in the south. The Houthis would face problems from Saudi Arabia if they split off. The Separatists might be able to make a go of it. And AQAP would be busy terrorizing everyone.