As has already been described, the PAF achieved an outstanding measure of success in both its immediate objectives during the first two days of the war. The significance of this soon became apparent: after the 7th of September, except for occasional air skirmishes over the international border, the IAF never seriously challenged the PAF for control of the air. Having achieved a healthy measure of air superiority, it now bacame necessary for the PAF to review its strategy for the foreseeable future. Since there was no political or army guidance available as to the probable duration of the war, nor was there any prospect of replenishment of lost aircraft, it was now of paramount importance to adopt a 'conservation' policy. It was, therefore, decided to halt daylight counter air operations altogether as they were likely to produce the highest attrition rate; henceforth attacks against IAF installations would be done exclusively by B-57s at night. The Sabres would be employed primarily on air defence and army support operations.