I'm not hugely familiar with Bannon. However, Paul Manafort works for the Kremlin. Check out what he did in Ukraine, what Trump pardoned him for. A man mentored with Trump for decades by the despicable Roy Cohn of McCarthyism infamy.
To be explicit, all these men and their cadre of cronies are despicable traitors not to be tolerated. Manafort and Mobutu Sese Seko, Manafort and Pinochet, Oleg Deripaska, Nastya Rybka.