11.   This part of the air campaign over Afghanistan revived a longstanding debate about the ethics of using cluster bombs.

12.   In the Philippines, the case has become a focal point of a longstanding debate over the mistreatment meted out to Filipinos working abroad in low-paying jobs.

13.   In the Philippines, the case has become the focal point of a longstanding debate over mistreatment of Filipinos working abroad in low-paying jobs.

14.   In the Philippines, the case has become a focal point of a longstanding debate over mistreatment meted out to Filipinos working abroad in low-paying jobs.

15.   The discovery by Ronald Clarke and Phillip Tobias of the University of the Witwatersrand in Johannesburg adds new evidence to a longstanding debate over how the human race developed.