From a Wikileaks Announcement:
The Kissinger Cables are part of today’s launch of the WikiLeaks Public Library of US Diplomacy (PlusD), which holds the world’s largest searchable collection of United States confidential, or formerly confidential, diplomatic communications. As of its launch on April 8, 2013 it holds 2 million records comprising approximately 1 billion words.
The Kissinger Cables comprise more than 1.7 million US diplomatic records for the period 1973 to 1976, including 205,901 records relating to former US Secretary of State Henry A. Kissinger. Dating from January 1, 1973 to December 31, 1976 they cover a variety of diplomatic traffic including cables, intelligence reports and congressional correspondence. They include more than 1.3 million full diplomatic cables and 320,000 originally classified records. These include more than 227,000 cables classified as “CONFIDENTIAL” and 61,000 cables classified as “SECRET”. Perhaps more importantly, there are more than 12,000 documents with the sensitive handling restriction “NODIS” or ‘no distribution’, and more than 9,000 labelled “Eyes Only”.
At around 700 million words, the Kissinger Cables collection is approximately five times the size of WikiLeaks’ Cablegate. The raw PDF data is more than 380 Gigabytes in size and is the largest WikiLeaks publication to date.