Persistence is an important quality that every leader should have. After a failed attempt of the task, a leader should be ready to try again 100 times if need be. This shows the team/audience that they have determination and hope that the task can be done.
Commitment is important for a leadership role. Being committed to a task shows responsibility also, and that they are willing to work for something. It shows that the task is important to them.
Every leader should be able to inspire others to do something. This is a strong quality for a leadership position to show that they believe that there is hope for the people. Inspiration is used by almost every leader of every country to change something in the world.