The concept of 'national interest was first introduced in the 16th century Europe. A most vague term, it has been most easily used and abused by politicians everywhere through the ages. The so-called national interest is generally referred to mean the public interest. A scholar of International Relations Hans. J. Morgenthau was perhaps the most noted advocate of national interest in history. As far as the national interest of Pakistan is concerned, it is given to imply security, peace, education, rule of law, sovereignty, good governance and basic necessities of life for common people living here. But since the government is unable to provide these basic necessities, the concept has been changed to mean whatever the rulers think of it. -FILZA KHURRUM, Karachi, May 29.