We examine a duopoly with polluting production where fi rms adopt a form of corporate social responsibility (CSR) to de fine their objective functions. Our analysis focuses on the bearings of CSR on collusion over an in nite horizon, sustained by either grim trigger strategies or optimal...

We model the perspective faced by nuclear powers involved in a supergame where nuclear deterrence is used to stabilise peace. This setting allows us to investigate the bearings of defensive weapons on the effectiveness of deterrence and peace stability, relying on one-shot optimal punishments....