Where is Sasuke?

In the latest chapter they 表示する him, along with Orochimaru and his comrades in the Leaf Village.

Spoiler alert sorry to tell あなた this people, but Sasuke went crazy, he was a ロスト cause, and as sad as it sounds he had to be put down.
One word for me is Whyyyyyyyyyyyyyyyyyyy
Why did he go mad for power?