Yale law prof Ian Ayres blogs about bribing Libyan troops to defect:
[T]he officer’s story reminded me of an alternative, more economic, incentive deployed in Iraq, where the U.S. offered defecting officers cash to lay down their arms.
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One advantage of cash compensation over Kristof’s recommendation of safe passage is that it might be more credible. Libyan officers can verify a transfer of funds, whereas a U.S. assurance that an officer’s family will be protected may go unfulfilled.
To say that Coasean bribes might be an effective strategy, however, does not necessarily mean that we should offer these blandishments. Inducing officers of another country to mutiny might violate international law. Coasean bribes are almost certainly a legitimate war-time tactic – even though it is a step toward a mercenary fighting force. But soliciting military insurrection by officers of a country with which we are not at war may be a different normative story altogether.
A couple of years ago, I addressed a related issue in Distinguishing Soldiers and Non-State Actors: Clarifying the Geneva Convention's Regulation of Interrogation of Captured Combatants Through Positive Inducements. My abstract:
While attention has understandably been focused on the coercive tactics used to question detainees held at Guantanamo Bay and elsewhere in secret prisons, much less has been written about the use of positive inducements to bribe detained combatants into cooperating with their captors. For the most part, commentators have suggested that the Geneva Convention raises no obstacles to the use of positive inducements, even against prisoners of war. While I agree that positive inducements are permissible against members of non-state groups such as al Qaeda, I argue that the Geneva Convention should be read as prohibiting the use of such inducements against members of the armed forces of nations, because doing so involves tempting detained POWs into betraying their home nations. The crux of my argument is based on the Geneva Convention's restrictions on compelling or seeking volunteers from POWs to perform labor that materially assists the war effort against their home countries. It seems perverse therefore to allow them to volunteer potentially critical military information. I further distinguish positive inducements to commit espionage in non-armed conflict situations on the ground that the induced betrayal is the same, but the exploitation of detention and captivity is not. The conclusion that the Geneva Convention prohibits the use of positive inducements against POWs, however, does not mean that positive inducements are barred against detainees who are members of non-state groups. Here, I argue that the non-state group's claim of its members' loyalty is not entitled to the same degree of protection as a nation's claim to its citizens' loyalty. While this conclusion may appear circular in privileging nations, it is a structural consequence of the restriction of the right to use military force. Finally, I consider whether positive inducements could be expected to work against suspected al Qaeda members.
There is, to be sure, a meaningful difference between using cash incentives to induce an enemy soldier to surrender when that soldier is not a captive of the bribing nation, compared to bribing a captured soldier to give up potentially valuable military intelligence.
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