Desautels has a major in International Management and a concentration in International Business. I am sure that you can arrange to have a minor in International Relations(or whatever McGill calls it). The hard thing to do is to get into Desautels. Getting a minor in something else can usually be done, if you plan carefully.
I did not know that NU didn’t have an undergrad business school. Surprising. I’m sure their Economics is very good, as they have to keep up with the Jones’ on the South Side.