Maybe German or French, possibly russian.
>No spanish speaking country has a massive presence in world
>affairs, as the U.S., Russia, and China all do.
That really has nothing to do with it. The reason english is so popular isn't because the US is the worlds only super power (don't flatter yourselves
), it is because back in the days of the Empire the British went all over the place setting up colonies and spreading it (along with their religious beliefs etc). The only other countries I can think of that did that on a scale anywhere close to the British Empire are France and Spain.