I am inferring from the gravity of such a situation that Obama knew. I am also inferring from the lack of criminal charges that they didn't find much, although that could change. If the FBI found some of these guys breaking the law, then I fully support them being prosecuted aggressively, up to and including Trump himself. If they didn't, then I fully support those who unmasked Flynn and Pence being aggressively prosecuted.
This is a shitty situation indeed, and everyone involved looks bad From where I sit someone needs to go to jail. Either Pence (and wouldn't that be a humdinger?) or the guy who unmasked him. Same for Flynn.