Bad way to put it, but she’s right. For example, while negotiating a peace deal in Syria, no negotiator can actually let on what they’re really talking about or the deal is off so you have to put a good face on what’s going on.
Any peace deal that will actually work will piss off a lot of people on every side. The negotiators would take so much heat they’d have to walk away from the table. So, you have to dissemble