This paper studies a three player hierarchical differential game (with a large country, a small country, and a terrorist organization), to analyze the actual European refugee situation. Terrorists may enter Europe as refugees, taking advantage of the Open Door Policy, to attack both countries....

This paper studies a three player hierarchical differential game (with a large country, a small country, and a terrorist organization), to analyze the actual European refugee situation. Terrorists may enter Europe as refugees, taking advantage of the Open Door Policy, to attack both countries....

The paper presents a simultaneous differential game between rich and poor Business Schools (BS) that yields an equilibrium in which either type of BS may end up with bad teaching and good research, without resorting to informational problems. The necessary condition for this is that the BS's...