Joker,
Have you noticed that every few years, America enters an elective war, fights to a stalemate, then exits without a resolution, leaving 50,000 troops there? Sometimes it's smaller - we install a govt with favorable trade policy. Off top of my head-
42 - Iran.
50s - Korea
60/70s - Cuba, Laos, Brazil, Chile, latin Amer, Vietnam
80s - nicaragua, el sal, iran, afghan
90s and 00s you know the rest.
Eisenhower warned us of it - the war profiteering industry. THAT is why we don't win wars. Winning means you stop spending. Stalemates mean you KEEP spending.