> "In another top-secret document seen by the Guardian, dated 2008, a senior NSA official points out that Israel aggressively spies on the US. "On the one hand, the Israelis are extraordinarily good Sigint partners for us, but on the other, they target us to learn our positions on Middle East problems," the official says. "A NIE [National Intelligence Estimate] ranked them as the third most aggressive intelligence service against the US."
https://www.theguardian.com/world/2013/sep/11/nsa-americans-...