3 Business Lessons from Burger King's 'McWhopper' Move on McDonald's

McDonald's angered the Internet on Wednesday with its snarky response to Burger King's call for a temporary "ceasefire" in the name of International Peace Day.

The Miami-based subsidiary of Restaurant Brands International announced its proposition via full-page ads in The New York Times and the Chicago Tribune to get its competitor's attention. The ads suggested that the fast-food giants should come together to create a hybrid of their signature burgers—the Whopper and Big Mac—and create a McWhopper. Proceeds from the menu mash-up would go to Peace One Day, a nonprofit that raises awareness for International Peace Day on Sept. 21.