That is a Russian eagle and I have long speculated that the next AC will be set in late 19th early 20th century Russia, seems i was right, also i thought the Byzantine Emperor Alexios IV may be involved due to subject 16 markings after AC1 when they went to Italy i dismissed the idea but when i see that Constantinople may feature in the next one i am sure in will be set around the early 1200's (perfect for Alteir's children) so multiple time periods, excellent just more history to sink my brain into.