WikiLeaks has published documents showing the National Security Agency spied on a 2010 meeting between Israeli Prime Minister Benjamin Netanyahu and Italian Prime Minister Silvio Berlusconi during which Israel sought advice on how to strengthen its relationship with the United States. The documents released Monday also reveal new details about U.S. spying on countries taking part in the 2009 U.N. climate summit in Copenhagen. One document contains details of a confidential meeting between German Chancellor Angela Merkel and U.N. Secretary-General Ban Ki-moon in the lead-up to the climate summit. WikiLeaks says the release includes some of “the most highly classified documents ever published by a media organization.”