[aasasd]

Can't speak from my experience here, but others say if you know one Romance language, you begin to easily understand words in other ones. So I guess any one of them would work as an international language, but Castellano seems to have a large headstart.

[rodgerd]

I'm learning French (B1 level) and was surprised how much I could pick out of a Romanian movie (the tremendously enjoyable https://www.nziff.co.nz/2019/christchurch/the-whistlers/).