Naruto Shippūden

Sasuke's long awaited battle with Itachi begins with the Uchiha brothers throwing genjutsu after genjutsu at each other. Sasuke seems to have Itachi cornered and asks him a few questions of the Uchiha massacre. Is Itachi not the only one involved in the Uchiha massacre? And does Sasuke still not possess enough hatred to defeat Itachi?