"War crimes" are just the reason given for winners to hang losers, no? To give the normal process of killing the losing side's leadership a semblance of legality.
One specific defence ruled out of the Nuremberg trials was that "you did it too" as that may have proved awkward.
cheers
Japan tried for centuries with a nationalistic expansionist policy.
It failed.
Now they have zombie banks and moron politicians that worship war criminals.
Hyundai destroyed Mitsubishi ship-building.
Samsung destroyed Sony TV.
Now Japan want to claim some Chinese islands as their own?