and now https://en.wikipedia.org/wiki/Annexation_of_Crimea_by_the_Ru...
and now https://en.wikipedia.org/wiki/Annexation_of_Crimea_by_the_Ru...
What about https://en.wikipedia.org/wiki/Turkish_invasion_of_Cyprus ?
WWI, WWII, the French and US involvement in Vietnam, the Soviet and US involvements in Afghanistan, etc. have long demonstrated that the modern wars aren't all 'short and winnable'.
Though the 1990–1991 Gulf War, plus the US invasions of Grenada and Panama, may have helped re-foster that view in the US.
War in Afghanistan (2001–present) - https://en.wikipedia.org/wiki/War_in_Afghanistan_(2001%E2%80...
When specifically did that war end and nation building begin? Who won the war?
EDIT: Is the Global War on Terrorism / Operation Enduring Freedom a "war"? It certainly feels like an never-ending war.
And https://en.wikipedia.org/wiki/Soviet%E2%80%93Afghan_War before that.
And a long list even before that.
I left out the first because top-level thread comment concerned European 'Great Powers', and because I wanted to give a specific counter-point with the major world superpower.
But time is always on the side of the defender, especially against overwhelming force. You beat a sprinter by making it a marathon.
I think all powers know this full well hence why they never engaged in direct conflict since WWII.
Wars since WWII have been limited wars against much weaker enemies and proxy wars.
Very different from Vietnam and other wars that you listed.
Which no doubt explained some of his enthusiasm for getting involved in the second Gulf War and the appalling state Iraq has been left in.
Choosing which wars are the short and just ones isn't so easy.