Japanese air force controlled the Strait of Malacca according to the U.S. Joint Intelligence Committee. Daily summary dated 5 January 1942

An item reported that the Japanese controlled the sea in the Strait of Malacca through their air superiority.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 26 dated 5 January 1942