Pick a situation where negotiation stopped. Tell me how the parties got to the impasse, what the impasse was over, what tools (strike, mediation, arbitration, etc.) were used to resolve

 Pick a situation where negotiation stopped. Tell me how the parties got to the impasse, what the impasse was over, what tools (strike, mediation, arbitration, etc.) were used to resolve the impasse, and what the outcome was or might be.