Nationalism is one of the great ideologies of the 19th and 20th centuries, whose demise was widely expected with certainty at the end of the 20th century. But Brexit, the election of Donald Trump as the President of the United States and constant gaining force by the Radical Right political parties in Europe sparkled discussion on the role of nationalism in the international system of the 21st century. The article answers the question whether this reanimation of nationalism is a long-term trend or merely an episode that supports predictions of its fading away.