 Complete the following phrase:  Early in the Pacific War, the Japanese had landed in north-west Borneo and had quickly captured the areas vital oilfields, which had begun contributing to their war effort by 1943. Allied efforts to interdict the flow of oil had been limited largely to aerial bombing in the intervening period as Allied ground efforts had focussed upon the drive on the Philippines. Nevertheless, by late 1944  early 1945 the Allies had begun planning operations to retake the area. Allied operations to re-capture Labuan and 