Can you help me with this question on leadership, power, and influence?:

Useem, by selecting the title "The Leadership Moment", suggests leadership is time and context related and episodic in nature relying heavily on action and vision.Northouse states that leadership is a process where an individual influences a group of individuals to achieve a goal.He notes, "it is not a trait or a characteristic that resides in the leader, but rather a transactional event" (p. 3) Clawson talks about three levels of leadership.As Clawson, Useem and Northouse examine, describe and illustrate the concept of leadership, how do their views fit together and compliment one another, and/or, how are they in conflict with one another?