This should surprise no one. Former National Security Advisor and far-right conspiracist Mike Flynn — who pleaded guilty in 2017 to lying to the FBI about colluding with Russian Ambassador Sergey Kislyak during the 2016 presidential election — would be saying the exact same thing if Putin had invaded America.
Obama fired Flynn for a very good reason: he was not only a fucking wackjob, he was compromised and could not be trusted.