Orange arrows indicate aggressive action, Black is entry on MD clause, Blue on an oD, Red is an undeclared war/raid, Browny/greeny colour is oA, green with a square head indicates non military interaction, round head indicates the conflict has come to a formal resolution.
Without all the randomness, and with colour representing which side they are one:
I may have missed some wars, likely from Umbrella and SLAP IDK.