The National Security Agency routinely shares raw intelligence data with Israel without first sifting it to remove information about US citizens, a top-secret document provided to the Guardian by whistleblower Edward Snowden reveals. Details of the intelligence-sharing agreement are laid out in a memorandum of understanding between the NSA and its Israeli counterpart that shows the US government handed over intercepted communications likely to contain phone calls and emails of American citizens. The agreement places no legally binding limits on the use of the data by the Israelis. The disclosure that the NSA agreed to provide raw intelligence data to a foreign country contrasts with assurances from the Obama administration that there are rigorous safeguards to protect the privacy of US citizens caught in the dragnet. The five-page memorandum, termed an agreement between the US and Israeli intelligence agencies pertaining to the protection of US persons", repeatedly stresses the constitutional rights of Americans to privacy and the need for Israeli intelligence staff to respect these rights. But this is undermined by the disclosure that Israel is allowed to receive "raw Sigint" - signal intelligence. The memorandum says: "Raw Sigint includes, but is not limited to, unevaluated and [unredacted] transcripts, gists, facsimiles, telex, voice and Digital Network Intelligence metadata and content." According to the agreement, the intelligence being shared would not be filtered in advance by NSA analysts to remove US communications.