Keep calm

"Chieftain Karstuk, with all due respect, I've come here as part of a peaceful initiative to negotiate and do what's best for everyone here. Let's just keep calm and try negotiate for both our peoples!"

Chieftain Karstuk pauses, considering this, before spitting again.

"Fuck you and fuck your people! All you shit merchants are the same, coming here with tied tongues and slit throats to try feed me something I don't want to eat. None of you come up here with food when the famines ripping through us, arms to protect us when we're at our lowest, nothing to help us when we need it, but when our young are strong and our blades sharp, the whole world wants its mouthful of flesh. A fucking crow pecking the dead flesh of warriors on the battlefield, that's what you are."

Chieftain Karstuk, finished his rantings and ravings, stares down at the ground. It's clear you need to temper your approach to the idiot.