The document discusses boundary spanning leadership. It defines boundary spanning leadership as leadership that bridges boundaries between groups in service of a broader vision or goal. It notes that while physical boundaries are breaking down, new psychological boundaries based on social group membership are emerging. It discusses challenges of boundary spanning leadership, such as being pulled in different directions and pushed to one group. It also discusses tactics for practicing boundary spanning leadership, such as suspending group identities and activating shared identities. Finally, it proposes areas for future research, such as exemplary boundary spanning leaders and initiatives.