This probably isn't what the United Nations had in mind when it established the International Day of Peace: Burger King is asking McDonald's to join forces to create a "McWhopper."
In full-page newspaper ads Wednesday, Burger King says it's calling for a truce with McDonald's so that they can create a mashup of their most famous burgers — the Big Mac and the Whopper.
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Burger King says it wants to serve the concoction for a single day somewhere in Atlanta, a midway point between the headquarters of the two chains.
Burger King is tying the publicity stunt to a nonprofit called Peace One Day, which says it promotes Peace Day. The United Nations designated Sept. 21 as the annual International Day of Peace in 2001.