Tag: BATNA

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Julius Caesar, Zone of Possible Agreement (ZOPA) in Civil War

In a book entitled Civil War, Julius Caesar narrates the political and military conflicts with the Roman Senate and especially with his rival Pompey. These led to a veritable civil war between contending groups looking to seize power.

In this post, I will analyse the successive peace proposals made by Julius Caesar and Pompey, through the lens of ZOPA analysis. The Zone of Possible Agreement – known as ZOPA – is a frame of reference that is relevant to any negotiation. It is defined between the parties’ two BATNAs. That is, between each player’s Best Alternatives to a Negotiated Agreement -BATNA-. Another way of expressing this is to define the ZOPA as the margin between the two reserve prices of each party. In other words, the minimum prices that the parties are willing to accept in a negotiation.

In the work Civil War, the author describes how the conflicts for power in Rome arose. He explains that Pompey made Julius Caesar the following proposal: “Caesar should return to Gaul, withdraw from Rimini, discharge his armies; if he met these terms, Pompey would go to Hispania. Until there was assurance that Caesar would do what he had promised, the consuls and Pompey would not cease levying levies” (I.10).

The analysis from ZOPA is that the parties’ BATNAs do not allow for a deal on these terms. The proposed deal is that Julius Caesar must withdraw and disarm while his adversaries continue to arm. Julius Caesar would rather fight with his present forces than disarm. Pompey concedes to go to Hispania but only after he has assembled  the troops. The agreement is unbalanced in terms of the strategic relevance of the concessions between the parties. Therefore, the party that is asked to make a greater effort – to disarm – will easily find a better alternative to the proposed agreement.

Events progressed and it was now Julius Caesar who made a proposal to Pompey for a peace agreement, on the following terms: “that they should cause no more harm to themselves or to the Republic. They themselves were already enough proof, by their own disasters, of how much power fortune has in war. This was the only occasion to treat of peace, so long as both were confident of their strength, and their power was considered equal; if fortune helped only a little to one of the two, he who considered himself superior would not admit of terms for peace, nor consider himself satisfied with a part in which he trusted to possess all.

Since he had not been able to reach an agreement before, the terms for peace had to be requested in Rome from the Senate and the Roman people” (III. 10). (III. 10)

This agreement is based on equality of forces and uses the figure of an arbitration by the Senate. It is interesting the reflection that Julius Caesar makes where equality of forces is more favourable to peace, while if one party is more fortunate in combat, it will seek to defeat the other in battle.

What Julius Caesar means is that agreement is possible if the two sides have similar BATNAs. If one side has a very good BATNA – it has a good chance of winning the war – there is no possibility of agreement. The Zone of Potential Agreement -ZOPA- will expand with the uncertainty of the final outcome from two medium BATNAs.

Turning to a third party to settle a dispute is a legitimate, and widely used, way to do so, as long as its impartiality of judgement is guaranteed.

To Julius Caesar’s proposal of peace, Pompey’s reply was: “What does life or the city matter to me if it is to be believed that I have it for Caesar’s benefit; this belief cannot be erased, since it will be believed that by him I have been restored to Italy, when I came out” (III.18).

Here it is worth remembering Fisher and Ury’s rule “Separate the persons from the problem“. One party does not want to enter into a agreement because any solution will look like a success for the other party. In addition to an issue of hierarchy between the two, what seems to be relevant here are the emotions that stand in the way of any agreement. This always leads to conflict.

Proof of this are the words of an officer of the Pompeian army, named Labienus, who at one point in the negotiations said: “Stop talking about peace, for there can be no peace for us unless Caesar’s head is brought to us” (III.20).

It seems clear that there is an emotional problem and that the declared aim of one side is the death of Julius Caesar. In this case, there is no ZOPA. No agreement is possible if one side only wants Caesar’s death to make peace. The other side’s alternative is to fight and defend Julius Caesar’s life.

Pompey’s end also teaches us about strategy. His armies were defeated by Julius Caesar’s armies and set sail for Syria. There he sought help from Ptolemy, king of Egypt, who was at loggerheads with his sister Cleopatra, who later had a relationship with Julius Caesar that has been mythologised. Out of fear of the threat he posed or out of contempt for misfortune, Ptolemy’s advisors agreed to answer Pompey kindly in public and secretly sent two emissaries to kill him (III.104).

This story between Julius Caesar and Pompey can make us reflect on some aspects: a) On the need to establish a Zone of Possible Agreement (ZOPA) according to the BATNA of the parties, their Best Alternative to a Negotiated Agreement. The key to negotiating power is to have a good BATNA, a good alternative to negotiate; b) Proper management of emotions. They should not be an objective, in themselves, of the negotiation; c) Approach of third parties when their impartiality of judgement is guaranteed.

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Thucydides, the negotiating power in the Melian dialogue

In the work History of the Peloponnesian War, Thucydides narrates the conflicts that took place in Ancient Greece between the polis of Athens and Sparta. He highlights the famous Melian dialogue in which the Athenians -who held an empire- and the Melians -who inhabited the island of Milos- discuss their future relationship.

This dialogue is characterised by the Melians appealing to arguments of justice, equality and neutrality, while the Athenians use the threat of force and unequal resources. It would be an example, among the classics, of what is called real politik.

The Athenians distinguish between arguments of justice -between equals – and appeals to force -between the powerful and the weak-. The Athenians assert that “justice prevails in the human race in circumstances of equality, and that the powerful do what their strength permits and the weak yield to them” (V.89). So  according to the Athenians, the Melians must yield.

The Melians attempt to deliberate, advocating a position of neutrality between Sparta and Athens, but offering friendship. The Melians argue “would you not agree that, remaining neutral, we should be your friends rather than your enemies, but not allies of either side” (V.94).

In a typical response of political realism, the Athenians set their priorities in the relationship with the Melians: 1.- Hatred/Vassalage; 2.- Enmity; 3.- Friendship/Neutrality. Allowing an island to be neutral and friendly is a bad example for the interests of the Athenian empire. From this perspective, the Athenians assert that “your enmity does not harm us so much as your friendship, which is to our vassals a manifest sign of our weakness, while your hatred is a sign of our power” (V.95).

The Athenians’ argument is an appeal to power and force. They do not try to convince the Melians of the advantages of accepting their position. Rather, they make a serious threat, which given the context must have been credible. The Athenians argue that “this is not a contest for you to measure courage on equal terms so as not to suffer dishonour, but the deliberation is rather about your salvation, which consists in not standing up to those who are much stronger” (V.101).

The response of the Melians is to relativise the power of the other side and give more value to the alternative of a confrontation than that of surrender. The Melians assert that “wars present vicissitudes that are more evenly shared than the disproportion of forces would suggest. For us to give in immediately holds out no hope, whereas by giving ourselves up to action there is still hope of standing” (V.102).

This Melian dialogue allows us to address the question of bargaining power. In particular, according to the terminology of the Harvard Method in Getting to yes, from Fisher and Ury, on BATNA. The key element of negotiations is what is the Best Alternative to a Negotiated Agreement –BATNA-. What is relevant is to identify this BATNA and use it as the yardstick to measure any possible negotiating outcome.

The BATNA marks the worst acceptable outcome of the negotiation. The red line where it is better not to give in. The key is that the better BATNA you have, the more bargaining power a party has. If a party has a strong alternative, it will be able to make greater demands of the other party.

I will now analyse the Melian Dialogue from the perspective of the bargaining power of the parties. The Athenians consider their BATNA to be high because they are powerful and strong. This means that they can conquer the city despite the will of the Melians. The alternatives are the surrender of the Melians or their military defeat.

The Melians try to deliberate and convince the Athenians in terms of equality and justice. Their BATNA is an alliance with Sparta to protect them from Athens. Their alternatives are a lonely and heroic war, an alliance with Sparta, surrender to Athens or compromise with Athens.

From the point of view of strategy, the Athenians failed because they only threatened with force, but did not try to convince the other side of the advantages of being allies. They sought a relationship of vassalage and wanted to impose it through force. The negotiation was about whether they would have to fight to achieve their goals. From today’s perspective, it would be better to have allies than forced vassals.

From the Melians’ point of view, the alternative to negotiating is to ally more strongly with Sparta. The problem with this negotiation is that the alternatives they propose are voluntary surrender or military defeat. These terms are unacceptable to the Melians. The way to improve BATNA is to consolidate and make credible the possible alternatives, particularly the alliance with Sparta. It should also try to deliberate and convince the other side on a principled basis.

Thucydides himself recounts that Athens finally carried out its threat. From this perspective, “the Athenians executed all the Melians of virile age who fell into their hands and reduced the children and women to slavery” (V.116). The Meliansdialogue does not have a happy ending. The powerful wins by making good on their threat to use force. The lesson, from strategy, is that negotiations should enable parties to improve their bargaining power and better results be obtained, in the long run, from principled and convincing arguments.