In addition to strengthening their own position, 3-D negotiators who add parties and issues to a deal can weaken the other side’s BATNA. For instance, when Edgar Bronfman, former CEO of Seagram’s and head of the World Jewish Congress, first approached Swiss banks asking them to compensate Holocaust survivors whose families’ assets had been unjustly held since World War II, he felt stonewalled. Swiss banking executives saw no reason to be forthcoming with Bronfman;