non-native language

And besides, the only other real options would be French or German

Then the other options would be Chinese, Arabic and Turkic.

If we choose internally, Spanish would be the best choice. Africa is ending their French dependency whereas Spanish would be great for Latin America.

Though, the US is preventing further alignments:

EU Leaders Skip Latin American Summit to Avoid Irking Trump

https://feddit.org/post/21358448