Pakistani students light oil lamps during a vigil for child victims who were killed in Israeli air strikes, in southern Pakistani port city of Karachi, Nov. 19, 2012. (Xinhua/Masroor)

A Pakistani woman lights oil lamps during a vigil for child victims who were killed in Israeli air strikes, in southern Pakistani port city of Karachi, Nov. 19, 2012. (Xinhua/Masroor)

Pakistani students light oil lamps during a vigil for child victims who were killed in Israeli air strikes, in southern Pakistani port city of Karachi, Nov. 19, 2012. (Xinhua/Masroor)