The Ukraine has national, independent aspirations. The Ukraine is populated largely by native Ukrainians. The Soviet Union forced the Ukraine to be a part of the USSR, much the way it did many of the "----stan" nations. And much the same way the US did Virginia after the Civil War, although unlike Russia, Virginians were virtually identical to Americans of European descent in the rest of the Union.

The Falklands are a small island group uninhabited when discovered by Europeans and variously had English, Spanish, and Germans. It has been populated by British citizens since the early 1800's. There are no "native" Falkland Islanders. The Falklands probably were occupied illegally by the Brits, and legally probably belong to Argentina but the passage of time and occupation by Britain has given it credibility. There doesn't seem to be any "statute of limitations" on those things, but if possession is 9 points of the law, the Brits now "own" them.

So, briefly, there is a national identity for the Ukraine and native Ukrainians. There has never been a national identity or natives of the Falklands.