intel expected to make a, quote, major announcement at 12:30. >>> other stories making headlines this wednesday, river levels in the midwest are slowly dropping. one day after the army corps levee. the levee had been keeping farmland dry but was causing extensive flooding in cairo, illinois. as of 9:00 last night, the ohio river had fallen by over a foot and a half. >>> rebels in libya say they are low on cash. fighters battling moammar gadhafi's troops say that oil has largely stopped flowing to the rebel-held areas, and financial activity is at a standstill. >>> a car bomb explosion in baghdad has left at least 16 dead, several others wounded. the blast occurred late tuesday night at a cafe filled with iraqis watching a soccer game. no one has yet claimed responsibility. >>> well, with osama bin laden gone, al qaeda's long sought-after number two, ayman al zawahiri, is expected to take over leadership of the terror group. >> but just who is al zawahiri, and what does the ascension to the number one spot mean to the ongoing war against terror? richard engel joins us now. richard, the one thing i understand about him is that he's not very popular. he isn't going to be a u