I'd offer that courage is vital to being able to overcome barriers in government and deliver high quality services to the public. Government was designed to be a slow, lethargic institution that was not easily swayed due to the ideas of a few. With the inertia that exists, leaders must have the courage to step up with new ideas, new ways of thinking, new ways of serving the public, and thoughtful ways of engaging others. Inherent in leading others is risk of social scrutiny and failure, two very powerful detractors from truly setting a vision and working with others to achieve it.
Secondarily, I'd offer the ability to build trust is vital. Without the trust of others, leaders' ability to move the needle will be diminished, constantly plagued by individuals not willing to fully engage and give it their best. People don't engage fully with those leaders they don't trust.