How Do We, What Negotiation Skills Do We Need?

When we're thinking about sustain ability, what negotiation skills do we need in order to handle that subsequent negotiation for sustain ability and operational alignment? I would say that one of the main skiles is understanding that paradoxes exist, contradictions exist, and getting rid of them is not always the best solution. So there is a clash that often happens when people from different cultures negotiate. It can't last long if you don't have trust. Trust takes a lot of time to build, but it can be broken in few minutes. And then it's very, very hard to get back to trust again, or to a healthy relationship,. 100 %.