A TROVE of WikiLeaks documents revealing the true scale of cooperation between the German and US spy agencies risks derailing Angela Merkel's hopes of dominating the EU, Julian Assange has warned.A 90GB cache containing almost 2,500 top-secret documents, now made public by the whistleblowing website, sheds light on the murky relationship between Germany's Bundesnachrichtendienst (BND) and America's National Security Agency (NSA). Amongst them are administrative documents, correspondence, agreements and press reactions, WikiLeaks said. The leaked files were submitted to a German parliamentary inquiry into the surveillance activities of the BND foreign intelligence agency and its US counterpart last year.WikiLeaks said its revelations of NSA spying on Angela Merkel and other top German, French and EU officials helped bring about the inquiry. Commenting on the latest release of classified papers, Assange claimed they could derail Germany's ascendancy within the EU. He said: "This substantial body of evidence proves that the inquiry has been using documents from Mr [Edward] Snowden and yet it has been too cowardly to permit him to testify. "Germany can not take a leadership role within the EU if it's own parliamentary processes are subservient to the wishes of a non EU state."WikiLeaks revealed in 2015 how the NSA had spied on Germany, and how Germany's own BND intelligence agency had cooperated with the NSA to spy on officials and companies elsewhere in Europe. Subsequent revelations alleged to show how the US spy agency was also snooping on former French presidents Jacques Chirac and Nicolas Sarkozy as well as incumbent Francois Hollande.WikiLeaks' latest statement added: "Whilst a number of facts have already come to light as a result of the inquiry including WikiLeaks' publication of inquiry transcripts last year this substantial new collection of primary source documents provides significant new evidence."The collection contains early agreements between the BND and the NSA and internal processes at the BND, but also more recent details on the close collaboration between the two agencies. "For example, one document from the BND states that a BND employee will be tasked to use and write software for XKeyscore, an NSA system for searching and analysing data collected through mass surveillance. "A number of the documents show how intelligence agencies find ways to work around their own government."