The Interior Ministry said at least 30 people were killed and 45 wounded ; the U.S. said 31 were killed and 40 were wounded . Defense Secretary David Petraeus says U.S. troops in midst of `` mission transition '' Gen. Odierno taking over command in U.S. from Gen. David Petraeus . Ray Odierno expected to set stage for eventual Iraq withdrawal .
Defense Secretary David Petraeus says U.S. troops in midst of `` mission transition '' Gen. Odierno taking over command in U.S. from Gen. David Petraeus . Ray Odierno expected to set stage for eventual Iraq withdrawal .