Deadline is a tricky instrument of negotiation. On the one hand, it is hard to reach an agreement on important issues without setting up some deadline, but on the other, deadline can foster unprepared agreements. Obviously, deadline should work for negotiating parties but not vice-versa. But to do so negotiators should spend time for negotiating deadline. In other words, before putting any deadline, the sides have to reach an agreement on deadline policies and implementations. However, beforehand they have to negotiate on possibility of deadline negotiation.