article_snippet.sent: The number of people on the list is classified.
article_snippet.sent: An official with knowledge of the government's figures told CNN in 2012 that the list contained about 21,000 names, including about 500 Americans.
article_snippet.sent: An unclassified summary of that information will be provided "to the extent feasible, consistent with the national security and law enforcement interests at stake," court papers said.