In 2015, Burger King attempted a peace offering — on Peace One Day — by proposing that it team up with McDonald's on the McWhopper.
McDonald's, however, was less than impressed. CEO Steve Easterbrook wrote in a Facebook post that the company loved "the intention," but believed the two brands could "do something bigger to make a difference."
"And every day, let's acknowledge that between us there is simply a friendly business competition and certainly not the unequaled circumstances of the real pain and suffering of war," the Facebook status read.
"P.S. A simple phone call will do next time," Easterbrook added.