i just let them hits each other until they can't fight anymore then i talk to them. if they still want to fight i beat the sh*t out of them. that usually work for me.

i help where i can

is the situation really intense or what?
try to talk with them and make them forget about the arguement. whatever u do, dont talk about their problems, it will make things even worst.

sit aside and watch...if get violence, i will sit further...

I'd sit on the side and see how it pans out. If violence becomes an issue, then i'll step in. I'd rather watch friend's let their words do the fighting instead of fists.

violence solve everything fast...strong win, weakling lose...and thats conclusion

depends. Usually you'll go with the person who you think is more likely to be right. But dont start favouring people.. then it just makes it worse

what kind of fight? physical fight? if it is then I would stop them right away, if that then I would first try to find out what's going on between them, then find the reason why it all got started and help out through fixing the root

don't get involved because chances are you will be forced to take sides.