-Chuckle- My, they did know how to get Albus' attention, didn't they? I daresay he's going to be doing a lot of digging, and what he finds out will not comfort him. I doubt it'll comfort Severus Snape, either. I can see that Grindelwald might get a touch of amusement out of seeing Albus so exercised.
The Brotherhood seems like quite an organization, but then they've had the time to -really- build things up. I daresay they've got lots of connections and influence we'll not see in this story.
Dumbles is at least capable of changing, somewhat, to adapt to the new reality; I sincerely doubt if the Ministry will be even that flexible.
Dumbles has one more old 'friend' to visit, who is even less glad to see him than Gellert. The Ministry will to a degree take care of itself by October.