Without it, people perish. Be able to see the big picture. Leaders are the ones who look at the whole picture instead of becoming bogged down in the minutia and pettiness. Although they are big picture people, they know how to get to the goal. Assemble the team.
Leaders know how to motivate and assemble the team to reach the goals of the group.
Possess the commitment to see things through. Leaders don't quit. Everyone will face obstacles and setbacks. Leaders continue despite them. Mentor others and know when to let them go.