James Clapper: “They were very successful.”

I think it's very prudent.

The frequency with which they are occurring, tells me that they're kind of in - they realize they're kind of in a jam.

It speaks to Putin's character, and his KGB background, having essentially lawless, mercenary group, a private army, responsible only to him.

I think he's trying to erase any vestiges of as much as he can of culpability that people that were caught up in this investigation.