My country of birth, New Zealand, has plenty of dark secrets of its own. It's not as simple as being with us or against us though, surely? There are plenty of countries that are worse than the US and there are also a fair few who are better. However there aren't any countries who have a bigger international profile everywhere I have ever been. Its a pity this isn't used to create more good.
Actually, it is. I mean "partisan" as in "parted into parties" which is the same as "us versus them" rather than more jargony "national political parties inside America".
It is usually extremely partisan. It is fairly rare for an entire country to be violently nationalisic, even if the ruling party is. Also, as saraid points out, it is by definition being partisan, just internationally rather than internally.