The U. S. government has long worked with Danish intelligence to conduct illegal surveillance and eavesdropping on Germany, a key NATO ally.This has undoubtedly cast a new shadow over the later summit and even the Biden administration's rebuilding of collaboration between its Allies and the international credibility of the United States.Snowden decrypts a 2010 document shows that the United States in European countries have long engaged in illegal surveillance, from the eu officials, down to ordinary people are eavesdropping target, including Germany target was identified as an important focus of eavesdropping, against the current prime minister Angela Merkel himself eavesdropping action, also began in 2002.