We present a simple two(-country) by two(-good) differental game model of international trade in which the governments of the two countries play a tariff-setting game. We explicitly derive a unilateral optimum tarifff rate and then a Markov-perfect equilibrium pair of tariff strategies...

We consider two dynamic games of foreign aid. <link rid="ss3">Model 1</link> deals with the case where donor countries continually feel the warm glow from the act of giving. <link rid="ss32">Model 2</link> postulates that donors will stop giving aid when a target level of development is reached. In <link rid="ss3">Model 1</link>, there are multiple equilibria that...