I won't comment much on Chim and the previous wars, but I will say I did have a modicum of sympathy for MI6, right up until having to deal with the wonderful conversations to be had on your forums with Charles et al. trying to see what the hell happened. I recall something about 20 pieces of silver and making yourselves out like a crucified messiah. I returned the favor with an affectionate invitation to Always Look on the Bright Side of Life.
At that point, it was pretty easy to just stop caring about what actually happened to you. The view I had as non-high gov was that Chim was actively looking for making a move on us post-war as a vendetta. I generally take the Ender's Game view of how you deal with enemies like that. Maybe you didn't see it that way, maybe the info didn't filter down to you, but whatever could theoretically have been salvaged was lost right about there with letting all outside contact be through the worst elements in your membership list.
I say all that having some affection for a few members, active and former, of MI6. The frustration was seeing it become an echo chamber, where "What if Umbrella is plotting to roll us?" becomes "Let's prepare war games for Umbrella rolling us" to "Let's get Umbrella to burn against Doom etc" a la the April announcement about Operation Goliath or whatever.
If someone is going to hate you for the long haul, you might as well embrace their hate and make sure they never have a chance to act on it. I am happy to see we did exactly that, though I lament the people who evidently *weren't* in on all this being dragged along with it by your leadership.