In a face to face game where I was playing USA yesterday, the Japan player didn’t account an american airstrike with my fleet then moving in sz7, killing his new purchases (1 carrier 1transport) alongside 3 scrambled fighters. After it the Japan player decide to continue his campaign in south east Asia, getting Indonesia, killing India and China as much as he could, ignoring naval defense by building enough land defense in Japan.
I conquered Korea, the Russian player reinforced me there with 12 inf and 2aa, I landed 4bombers in Amur alongside 6russian inf. (Russia declared war prior to my turn to let me do this)
Korea become my new minorIC and Naval base; and NorthChina was liberated. The 4bombers were deadly in any naval and/or land operation. I reinforced the sz6 embargo with 3 turns of buys.
1: I replaced the fighters lost in the first attack
2: I moved there 10submarines
3: I moved there 5destroyers and built a full carrier in sz6.
After it Japan was still earning in the 50, thanks to his southasia holdings.
I started pouring units in Europe 'cause the Russian player did a stupid move and lost a big stack, but I had enough to cripple Japan now forever.
I left sz6 and liberated Hong Kong, Indo China, Borneo, Philippine, with sacrifical transports.
At that point the Japanese player was completely dominated and reduced to something like 15ipcs.