Red Lines
"red lines relate to the boundary of diplomacy and sanction behaviour. But they are also a useful feature of negotiating strategy. Don't confuse them with 'bottom lines', or 'must avoid' positions, which describe walk away positions. Normally a negotiator will not reveal his bottom line position to the counterparty because revelation can change the perception of the balance of power. If buyers know that the bottom line for a seller is a discount of x%, and no more, then their power to get that discount is increased. Similarly, if they know that the seller 'must avoid' losing the order, their position is strengthened."
(I'd have thought Martcov knew all this already, being the travelling super entrepreneur and economics expert he is, but apparently not.)