Many Israelis were scandalized when documents released by Edward Snowden revealed that their best friend, America, had in 2009 targeted a former prime minister and defense minister for secret surveillance. But their political leaders were not surprised. For years, the United States has been running a complex eavesdropping and surveillance web to spy on friends and foes alike, including Israel. Satellites gather and transmit data to command centers, “informers” operate in the field and the most fertile sources of all are not human but the instruments which bug cell phones, tablets and social networks. The US National Security Agency, NSA,...