QUESTION 1: What is a Conflict of Interest?

2nd QUESTION: What type of mentality generates a conflict of interest?

A "win-lose" mentality, where it is believed that for one to win, the other must lose
A mindset of collaboration and mutual help
A mindset of indifference to the outcome
A "lose-lose" mentality, where no one gets anything

There is no difference, they are synonyms
Position is the reason and interest is what is wanted
Position is what you say you want, and interest is the underlying reason why you want it
Interest is always material and position is immaterial

Let one party win and the other lose
Find a temporary solution
Demonstrate who has more negotiating power
That the parties stop seeing the conflict as a battle and see it as a problem to be solved together