[The war has been taken its toll on everyone, it seems. He's seen those hardened expressions himself, has his own version of them. And there are really countless reasons behind them. So he certainly wouldn't be the type to pry.]

Yes, the other Kage and I attempted to hold off Madara and sent Naruto to take care of Obito. We failed to keep him away from the battlefield though. By the time we were capable of returning to battle...

Things were complicated. The past Hokage were on the battlefield supporting us. Obito had taken form of host of all the bijuu, and the flower necessary for their plan had blossomed. Its roots were attacking the army and stealing their chakra.

And Naruto and Sasuke stood together fighting Obito. Naruto found a way to pull the bijuu from him. It was a different technique than the one used to take the Ichibi from me, so I'm not sure what the results will be. But I'm quite confident the release of the bijuu was successful. [Even if he wasn't there to see it.]