вести переговоры

From LSJ

ἔκστασίς τίς ἐστιν ἐν τῇ γενέσει τὸ παρὰ φύσιν τοῦ κατὰ φύσιν → what is contrary to nature is any developmental aberration from what is in accord with nature (Aristotle, On the Heavens 286a19)

Source

Russian > Greek

χρηματίζω, ἐπικηρυκεύομαι, πρεσβεύω