What should be role of captain while communicating in media?

I have done it or we have done it? Why Dhoni become so colloquial of his choices, he made before last tour of Australia triangular series? He has all the credit of historical win or has he? I do not know right answer of above questions. But I am shocked to see this news; team practicing in Chennai for the coming test match against South Africa was seen polarized in two groups. Not to say surprisingly it was seniors vs relatively juniors. Kumble vs Dhoni. One wrong word in media is dividing the team. Dhoni, maturely could have avoided his personal feelings while talking to media. Dhoni should remember that he is not a caption of Junior team. He is captain of India. And seniors too represent India. BCCI should think on some polices on what should be role of captain while communicating in media.