It's a long story, but Italy's gold is not really Italy's, in the normal sense. Italy lost WWII, and has been a de facto "vassal" of the US since then; the US has several military bases in Italy, and has a very strong influence on anything related to foreign policy, etc. Don't take my word for it, there's not a single link to prove this, but a bit of research should make what I say at least plausible.

Just to give a small hint: the 1998 "strage del Cermis" [0], in which a US aircraft mistakenly cut a cable supporting a cable car and resulted in the killing of 20 people. The pilot, Captain Richard J. Ashby, and his navigator, Captain Joseph Schweitzer, were put on trial in the United States and were found not guilty.

Try to imagine something different. An Italian military aircraft flies in the US, and mistakenly kills 20 people. What would have happened to the Italian pilot?

[0]: https://en.wikipedia.org/wiki/1998_Cavalese_cable_car_crash