It's an impressive number indeed, although comparing it to the GDP's of the (at best) regional powers you mentioned is not particularly relevant. Defense spending as a percentage of US GDP is actually relatively low by historical standards at 3.3%

> This program by itself is as large as the economy of Uruguay or Croatia

You mean as the annual GDP of Uruguay or Croatia? This is not a program that goes on for one year, it spreads over decades. You are not comparing apples and apples.

this single program is almost twice as expensive as twitter!

Lol. I think in that respect, this program seems pretty good value. Twitter doesn’t add much vis a vis a world where Reddit exists.

This is stealth bomber capable of deploying nuclear weapons. Likely to maintain part of the nuclear deterrence for a few decades.

Twitter is just a thing.

Yes, the US GDP is staggering. It is bigger than all those countries combined.

What percentage of GDP is spent on defense?

It has actually gone down over the decades.

https://www.macrotrends.net/countries/USA/united-states/mili...