A White Paper generally indicates a government report giving information or proposals on a certain issue.
In the The EU Bubble is a term used to indicate a reality distortion generated by the peculiar set of people that inhabit the Brussels' European District. A Bubble resident typically uses sentences like: "We should burst the bubble!", "We need to break silos", "Reach the citizens". The Bubble manifests itself in... the term refers to the one and only Juncker’s initiative in which citizens were invited to discuss a set of possible paths for the future of Europe.
Useless to say, it didn’t have the same reach as Harry Potter’s latest book, no matter how hard senior communicators tried to impress the audience.