Dear Mary would be so disappointed in this article. Of course "God is the only way to peace". What Moslem though, would agree that the rosary, for example, is an efficacious route to peace?  For that matter, what thinking Catholic would? And I don't blame them at all, at all. 
The God of and for peace lives within the humanity of each person, each leader who either answers the call, refuses it or abuses it.  It is the value acknowledgement that has been redeemed, not the redemption that has not been acknowledged.