The USA also asked Iran to return the spy drone that crashed in Iran's territory. Imagine that: Iran, the nation the USA has been sanctioning and sabre-rattling against, criticizing their elections, and demonizing their government, decides to hand the USA its invaluable cutting-edge drone tech because Obama asks nicely - after flying it into Iran's territory, illegally, to spy on Iran, illegally.
Expectedly, Iran didn't return the drone, but instead, reverse-engineered it, and made their own copy.
I wonder if Iran shared the drone-findings with other nations.