|Here is an important point: if Dumbledore can't move against Grindelwald because of their pact, then why is Grindelwald bothering to enlist Credence? We know that even Grindelwald's acolytes understand that Dumbledore is the only one standing in their path, but I would like to suggest that--even before the Niffler takes the blood pact vial--Grindelwald knows Dumblefore will figure out a way around the pact or of stopping him through some other means, so Grindelwald anticipates Dumblefore's defiance of their pact. The pact, then, acts like the famous Molotov-Ribbentrop Pact of 1939 signed between Joseph Stalin and Adolf Hitler: even though Hitler and Stalin knew they would be going to war against each other, they signed the treaty to buy themselves time. Germany needed to make sure that the Soviet Union would not open up a second front to World War II, splitting German resources, and the Soviet Union needed time to produce war weapons and mobilize, and didn't want to pose a threat to Germany before the war between the two was inevitable. In short, the blood pact--while it may have had a different purpose initially--is, by the time of Fantastic Beasts 2, essentially acting as this treaty between Germany and the Soviets: buying each other time.|
There's a saying that, "Friends are the family you choose," instead of the family you don't choose, and for a young Dumbledore--anxious to be freed of taking care of his younger, orphaned siblings--we can see why Dumbledore would choose Grindelwald to be his intelligent, advanced, ambitious and exciting brother instead of Aberforth (at one point, I think it's in the Half-Blood Prince, Dumbledore says of Aberforth, "I don't even know if he can read," which shows you how little he thinks of his brother and how distant they are). So Dumbledore saying, "We were more than brothers," is merely saying, "We were blood brothers, because we choose each other," rather than just being saddled with someone (like Aberforth and Arianna who Dumbledore did not choose). Now, please recall what happens in Goblet Of Fire when Peter Pettigrew concocts that "potion" to restore Voldemort's body: he takes some of Harry's blood which then becomes a part of Voldemort; in a sense, Harry and Voldemort become "blood brothers" (although Harry certainly doesn't choose to do so) and Voldemort then becomes Harry's protector because Harry's blood now runs in his veins (the same way Aunt Petunia's blood protects Harry because she and Lily share the same blood). This is the scenario I think Rowling is going with because, when Harry comes along, Dumbledore understands it because he's all ready been through it himself with Grindelwald.
What about Credence?
|There is quite a bit we don't know about phoenixes (pictured at the top, from Pottermore) but we do know that they are closely related to Thunderbirds (bottom image) which Frank was one from FB1.|
Eat Your Art Out,
The Fine Art Diner
P.S.--I still have my full review of FB 2, but the explanation I wanted to provide seemed best to its own post, so more is on the way!