Chief of his own faction Pakistan Muslim League (Nawaz) Muhammad Nawaz Sharif on Tuesday said that he was not allowed to complete his tenures twice in the past. While addressing a press conference in Karachi, Nawaz said that his first government was dissolved by a president while an army general took over his second government and he was not allowed to complete both of his tenures. The PML-N chief said that Banazir was martyred four years ago, but her killers were still to be arrested. He said that President Asif Zardari did not fulfill his promise and had failed to arrest Benazirs killers. He said the political parties, which were accused each other in the near past, were now coalition partners. He said there should be principles in politics also.