Once Buyer selected the supplier for the PCBs, XYZ Corp., you begin the process of negotiating a contract. The negotiations have become strained between you and your counterpart. You've noticed a worsening pattern of behavior that began as simple omissions in communications, then misreporting progress, backdating documents, and finally, slipping in new terms to drafts without your knowledge. During your last meeting with your negotiating counterpart, they became very aggressive demanding that several proposed terms be accepted or XYZ Corp. would walk away from the negotiations. You've decided to brief your supervisor on the situation. As an aside, you are aware that leadership is intent on establishing a long-term relationship with XYZ Corp. to ensure a stable supply chain for this and future projects.

Describe any issues with this type of behavior, that you would raise to your supervisor, and why they are significant. Also provide an example of steps/strategies/tactics you might take to resolve these issues and complete the negotiation.