[smithza]

> Such a position is certainly partisan

Try patriotic, or more cynically nationalistic.

[Eelongate]

Partisan fits. https://en.wiktionary.org/wiki/partisan

1. An adherent to a party or faction. 2. A fervent, sometimes militant, supporter or proponent of a party, cause, faction, person, or idea.

Maybe that word isn't judgemental enough for you, but it fits and I used it carefully.

[robotresearcher]

Both of these are instances of partisanship.