The thing is, I can understand the situation from their perspective however that doesn't justify their actions.
If their own perspectives do not justify their actions, then would it be fair to suggest that your perspective does not justify your actions? We're looking for an even/shared/fair playing field here. What does justify everyone's actions, if not their own perspectives?
They have repeatedly caused drama and I recognize the underlying reasons so I don't overall think of them as bad people.
Good, they're not bad people; there's a positive. So they're probably not doing what they're doing because they're bad people or to intentionally antagonize you, correct? What do good people with neutral/good intentions towards you deserve as a response from you with regard to their behavior? Rather than focusing on how they "repeatedly caused drama", how does this drama have an effect on you, and do you have a proposed, situational solution to help address it?
But I also don't want a resolve or cooperation. I just want us all to be clear on what will no longer be tolerated and then cut off interaction.
It seems as though you are not actually in a primary position to set ground rules for everyone to follow, or are you? If you're not, then to take that position now and declare yourself 'Queen of the Castle' would likely go unappreciated, unheard, perhaps even scoffed at or retaliated against. If you are in a primary rule-setting position, and you have no intentions of resolving, cooperating, or tolerating, then it seems this part of the reading might actually be moot...?
This reading overall is giving me the sense that I need to be more diplomatic than I would like. Do you agree?
Yes. "Leadership is the art of getting someone else to do something you want done because he wants to do it." -Dwight D. Eisenhower
There are three steps in this quote:
1. The art of getting someone else to do something;
2. Something that you want done;
3. Because that person also wants to do it, even though they don't know it yet.
You can manage a house, manage the bills, manage-manage-manage anything and everything within whatever 'system' you are living/working in, but you will never manage people without the art of /cooperative/ leadership (unless you are in a very clearly defined and understood role of 'Do as I say, because I said so and you must'.) You shouldn't throw your weight around anyway to command respect, but if you do, then it would help to actually have that understood power to do so. Otherwise, people are going to look at you like, "Who does she think she is?" You may be 'better' behaved than these folks, but that is just your perspective, and your perspective does not justify your actions, correct?