Beat me to it!!! Just came to post that. Saw it on sky breaking news.
Just makes the plot thicken even more.
We know it won't show him in good light.
My guess is that more so it'll throw some current government members right under the bus with him and this is as much revenge as him saying "I think I was right and always did the best I could".
He can't seriously be deluded enough to think the enquirers won't show he made massive bad decisions at the time?