Drawing on what he's learned from years of working in countries and organizations around the world, Williams shows leaders how to approach the delicate and creative work of boundary spanning, whether those boundaries are cultural, organizational, political, geographic, religious, or structural. Sometimes leaders themselves have to be the ones who cross the boundaries between groups. Other times, a leader's job is to build relational bridges between divided groups or even to completely break down the boundaries that block collaborative problem solving. By thinking about power and authority in a different way, leaders will become genuine change agents, able to heal wounds, resolve conflicts, and bring a fractured world together.