A well established belief both in the game-theoretic IO and in policy debates is that market concentration facilitates collusion. We show that this piece of conventional wisdom relies upon the assumption of profit-seeking behaviour, for it may be reversed when firms pursue other plausible goals....

We analyse games between two countries which use the threat of imposing a tariff to induce each other to follow monetary policies equivalent to those that would obtain under a cooperative game. The analysis shows that -- under certain assumptions concerning the shares of tariff revenues, what...