Leadership requires competence and the ability to follow through on decisions. Remaining steadfast and uncompromising in one's positions does not necessarily represent strong leadership if the leader makes poor decisions based on flawed assumptions or facts. In that situation, an uncompromising attitude works against successful leadership.
Call me a pragmatist, but I expect a successful leader to do everything possible to ensure that the decisionmaking process leads to the correct decision. Should that process fail, a pragmatic leader changes tactics or strategy to account for new information. Staying the course, should that course be the incorrect one, benefits nobody.
-- Todd/Leviathn