A former spy switched sides and worked for the other side exposing agents and whatever else MI6 deemed worth paying for. What would be your (or anyones) decisio

A former spy switched sides and worked for the other side exposing agents and whatever else MI6 deemed worth paying for. What would be your (or anyones) decision as head of state? Of course if a country being attacked, a leader is disliked by a geopolitical foe, those are natural things.