What a random as hell list:

We are growing rapidly and continuously expanding our hiring capabilities in other geographies. However, at this time we are unable to hire employees and contractors in the specified countries below:

Brazil
Crimea
Cuba
France
Iran
Japan
North Korea
Poland
Portugal
South Korea
Spain
Sudan
Sweden
Syria

The only unifying theme other than they are all spelled in English is that they are all on the larger side except Crimea. They don't have any Monacos or San Marinos, other than Crimea. I suspect this is simply because it hasn't come up in a lot of Pacific island countries and such, but who knows.