In the context of Anu's definition, perhaps it could be considered slightly redundant (not that there's anything wrong with a little redundancy now and then for the sake of clarity, but). AHD4 gives another definition that has rapprochement as the product and not the process, and, using this definition I would say that is definitely not redundant.

http://www.bartleby.com/61/59/R0045900.html