Japan was being outproduced in carriers and was unable to launch any offensives after its defeat at Midway in June 1942. It was overextended and could not even feed its garrisons on islands across the Pacific. Tokyo's plan of conquering the Solomons at Australia's doorstep turned into a continuous retreat for the Japanese of which the defeat on Guadalcanal in early 1943 marked the beginning. Japan's invasion of India had been halted at Imphal and Kohima, rendering impossible any joint operations against India.