Purpose of the 'Allow International Payments Flag' on the External Bank Account Setup.

It is pretty obvious what the Allow International Payments flag on the external bank accounts.  We are converting several thousand suppliers in Europe and deciding whether or not to check this flag for all suppliers.

Does anyone know the reason why Oracle has this control in place.  Are their certain countries that prohibit international payments or something.  Just seems a little odd.  We are trying to build a pro's and con's list for Checking this for all suppliers vs only checking this when absolutely needed.  (Arguement already exists that we will need to update this flag late next year when we transition to SEPA if we are paying out of a single bank account).  I cannot think of any con's other than the loss of this payment control.  (I dont understand the purpose behind this control in the first place.)