I should have been clearer about what I meant by Slavic nationalisms: I mean specifically, and emphatically, Russian, Serbian, Bosnian (Christian and Muslim) and Pan-Slavic nationalisms, all of which display the traits I just described. The Polish, Ukrainian, and Croat nationalisms, because they are Western oriented, are less offensive to national security, personal safety, and liberalism than the Orthodox- and Islamic-inspired ones. OTOH Macedonian "nationalism" is just a little short of embarrassing.
With that said, how do you consider American nationalism as the second biggest threat today?
**I say this with full awareness of the US war in Iraq.
You obviously haven't heard of Operation Storm, or of the proportion of Serbs in Croatia to the one in 1991, or you wouldn't sprout that nonsense about the benign Croatian nationalism (and lets not even start with the Catholic-supported Ustache movement). And Croats also participated in the massacres in Bosnia
Ukrainian nationalism is even more repressive to national minorities than Russian nationalism, and is mostly Eastern Orthodox based, to add.
Polish nationalism has little targets left in Poland, but it's extremely antisemitic in nature (same goes for the Ukrainian one).
Pan-Slavism is mostly dead. It's role, while it existed was mixed - on one hand, it supported Russian expansion, on the other it defended those Slavs - then the majority - who didn't have their own nations.
And regarding the Eastern Orthodox church as inspiring nationalism is incorrect and simplified, considering that Serbia and Russia are not especially religious. Also, the Eastern Orthodox church has often protected national minorities.
American nationalism is dangerous, because it's expressed in the most powerfull nation in the world and a significant current within it (for example, the last administration) support extending America's dominant role in the world, which has caused quite a few wars, coups and revolts. Russian nationalism, in comparison seems mostly defensive.