Sitting in a foreign country, I am constantly reminded of some uncomfortable truths:
To some extent, it is okay to be proud of my country. But I probably don't have the right extent: some have too little, and some have too much.
Regardless, putting my nation and my people first over all others—whether "my" nation is America or the UK or India or China or any other—is never a Biblical act. God always desires that we as individuals—and therefore we as corporate individuals—put others above ourselves.
Nationalism and patriotism can be as soul killing an idol as materialism or lust or greed or pride.
Anyone who loves their father or mother more than me is not worthy of me; anyone who loves their son or daughter more than me is not worthy of me.
Matthew 10:37; does this not apply just as much to love of country?