WikiLeaks has released the the "Kissinger Cables," a collection of over 1.7 million pieces of diplomatic communications totally over 1 billion words, send in 1973-1976, when Henry Kissinger served as Secretary of State and the Cold War was in its détente phase. With a cache this massive (and thus far, not that shocking), what you find all depends on what you're searching for — like, say, the Russian predilection for soft rock. To put the size of this leak in perspective, it's roughly five times the size of the Cablegate, the original WikiLeaks dump published incrementally from 2010-2011. (The last major release by the organization was last summer, regarding Syria.) And this time, instead of a pre-screening by selected media outlets (that didn't always go over so well), Julian Assange and Co. have created a searchable database, to save your eyeballs from all those words at once. And it also means what you find in there depends on what you're looking for, even though WikiLeaks promises "significant revelations about US involvements with fascist dictatorships, particularly in Latin America, under Franco's Spain (including about the Spanish royal family) and in Greece under the regime of the Colonels."
For example, plug in "NODIS" (no distribution) or "ONLY" (eyes only) and you'll get get more classified materials than you could ever ask for (13,245 for NODIS; 9,895 for ONLY), some more historically relevant than others — like this document from Ho Chi Minh city, detailing the tenuous ceasefire situation in the region: