Leadership: Following public opinion or sticking to convictions?

Don’t have enough time today to flesh out this issue, but I do want to post a question for us all to consider.

Is leadership about doing what other people want you to do or following your convictions about what is needed? Pres. Bush and the Iraq war is a perfect case study. Everyone doubts him right now, only time will tell if he is correct about the direction of the war. Does he listen to the public, or does he continue down the path that he thinks is best?

There must be some healthy mix of both is my first blush answer. More later.