What effect does international law have on public attitudes toward violence during wartime? In this talk, Professor Wallace considers the effects of international law on mass attitudes toward wartime violence. In particular, Wallace focuses on public support for torture, an issue area where national security concerns are often considered paramount. Contrary to the common contention of the inefficacy of international law, he finds that legal commitments exert a discernible restraint on public support for the use of torture. The effect of international law is also strongest in those contexts where pressures to resort to torture are frequently at their highest. Professor Wallace also finds that the relative precision of the rules, along with the degree to which enforcement is delegated to third parties, plays a much greater role in shaping public preferences than the actual level of obligation under international law.