Noun
ultranationalism (countable and uncountable, plural ultranationalisms)
Extreme nationalism, the belief in the superiority of one's nation and of the paramount importance of advancing it.
Fear of communism, extreme revolutionary ideas and ultranationalism caused sharp fighting among the new ruling elites. Source: Internet
He is depicted as a tragic hero with an intense dislike of the wartime ultranationalism which surrounds him. Source: Internet