This chapter discusses influence, persuasion, and negotiation. It covers six primary approaches to influence: social proof, authority, liking, consistency, reciprocation, and scarcity. Regarding negotiations, it discusses types of negotiations, common biases, BATNA, the importance of information, framing, fairness and trust, positive emotion, and culture. The key learning objectives are what persuasion is and its role in influence, the six approaches to influence, negotiations, and international applications and concerns.