Yeah, Spanish could be it, too. Not so many speakers in the EU, but I agree that it's relatively easy to learn for most people and quite well known. Problem is,

Yeah, Spanish could be it, too. Not so many speakers in the EU, but I agree that it's relatively easy to learn for most people and quite well known. Problem is, Spain would need to play a bigger role in the EU, these days it seems busier with itself and hardly ever gets involved in EU affairs (other than with the Gibraltar issue around Brexit - obviously ;).