President Asif Zardari has urged all the institutions to work within their specified ambit, denying the impression that the institutions are on a path of collision with each other, report said. All the institutions should perform their duties in their defined jurisdictions. Neither there is a war going on among the institutions nor I see any such possibility in future, Zardari said while talking with a private TV channel. He claimed that his opponents are against the office of the President of Pakistan he holds, adding that Pakistan Peoples Party never accepted General Musharraf as a constitutional head of state.