The word "responsibility" derive, in it's etymology, from "responsum abilem" that means "able to answer for".
Leadership and responsibility are deeply interconnected: a leader should be able to answer and explain the reasons of it's own decision to anyone that ask about them.
From such ability derive the confidence that both the team and the team's stakeholders give to the leader. Confidence that should be "signed" form his "authority", his position in the enterprise organization.
But authority without responsibility lead to decision deadlock, since the fear to respond rapidly cause the fear to take decisions.
Leaders that are not able to answer for their decision can not lead.
People that rely on their position in the organization (their authority) to endorse their decisions should be replaced.