This was Hungary after WW1 around the dissolution of Austria-Hungary. From the north it was attacked by the newly formed Czechoslovakia, from the east by Romania and from the south by the Kingdom or Serbs, Croats and Slovenes. Even Austria, the former co-constituent of Austria-Hungary, took lands from Hungary in the west. The result was that Hungary had to cede about 2/3 of its territory. While large groups of non-Hungarians living in those territories welcomed these border changes, also several millions of Hungarians found themselves under the rule of neighbouring countries because the new borders did not respect the linguistic borders. While you may say that isthis does not have any relevance to current days politics, exactly the opposite is true.