Here is what he actually said:
“You need to know that those who observe us from afar are worried. I have have seen, listened and heard many leaders of other planets and they are very worried because they wonder about the course the EU will follow. So we have to reassure both the Europeans and those who observe us from afar” (by the way – this section was removed from the official transcript of his speech)
Sure, the senile (drunk?) man meant to say “plusieurs des dirigeants de notre planète” (many leaders of our planet) and it came out “plusieurs des dirigeants d’autres planètes” (many leaders from other planets), but this is still telling. To think that this is the kind of person who “heads” (at least formally) the EU is both hilarious and depressing.
Good thing that the EU is totally irrelevant.