Today, through plate tectonics, the islands of Indonesia and the Philippines stand as barriers between the Indian and Pacific oceans. In fact, there once was a warm ocean current flowing from the Pacific to the Indian before the volcanic upbringings of the islands detoured the current to the North Pacific.
But if the plate tectonics are rearranged to the extent that neither Indonesia nor the Philippines exist, how would the difference in current circulation affect the climates of Asia and Australia?