First I observe what kids are doing I mean whether kids are happy and enjoying fighting (playing) or just trying to make one of them cry. afterward I explain my kid very politely that how to behave in front of others or at any other place.
Well, whether you agree or not but kidz listen (afraid) to dad more than mom because mom in a day, 101 out of 100 times prevent their kidz. This is also one reason mostly kidz don’t listen to their mothers.
Sometimes, its goods to ignore what kidz are doings, because the kidz thinks by doing such things, parents pay more attention so the kidz repeat.