“JB: And the practical consequences of that political reason would be then aggression against the Russians interviewer: might have been world war III. JB: Absolutely. And that's why we were querying our instruction from an American general. Fortunately, up on the radio came Gen Mike Jackson, whose exact words at the time were, 'I'm not going to have my soldiers be responsible for starting World War III”

Source: 1970s, Take Today : The Executive as Dropout (1972), p. 152

2022, March 2022
Source: Why Biden and the White House keep talking about World War III (March 17, 2022) https://www.washingtonpost.com/politics/2022/03/17/why-biden-white-house-keep-talking-about-world-war-iii/

Quoted by Kevin Gosztola in CNN Foreign Policy Gatekeepers Vilify Tulsi Gabbard for Her Anti-Intervention Dissent, Mintpress News https://www.mintpressnews.com/cnn-foreign-policy-gatekeepers-vilify-tulsi-gabbard-for-her-anti-intervention-dissent/256221/ (13 March 2019)
2019

Cleric: US threats, fruits of insanity, Press TV, October 2007 http://www.presstv.ir/detail.aspx?id=28077&sectionid=351020203,

Source: 1970s, Culture Is Our Business (1970), p.66

Interview with Alfred Werner, Liberal Judaism 16 (April-May 1949), Einstein Archive 30-1104, as sourced in The New Quotable Einstein by Alice Calaprice (2005), p. 173
Differing versions of such a statement are attributed to conversations as early as 1948 (e.g. The Rotarian, 72 (6), June 1948, p. 9 http://books.google.com/books?id=0UMEAAAAMBAJ&pg=PA9: "I don't know. But I can tell you what they'll use in the fourth. They'll use rocks!"). Another variant ("I do not know with what weapons World War III will be fought, but World War IV will be fought with sticks and stones") is attributed to an unidentified letter to Harry S. Truman in "The culture of Einstein" by Alex Johnson http://www.msnbc.msn.com/id/7406337/, MSNBC, (18 April 2005). However, prior to 1948 very similar quotes were attributed in various articles to an unnamed army lieutenant, as discussed at Quote Investigator : "The Futuristic Weapons of WW3 Are Unknown, But WW4 Will Be Fought With Stones and Spears" http://quoteinvestigator.com/2010/06/16/future-weapons/#more-679. The earliest found was from “Quote and Unquote: Raising ‘Alarmist’ Cry Brings a Winchell Reply” by Walter Winchell, in the Wisconsin State Journal (23 September 1946), p. 6, Col. 3. In this article Winchell wrote: <blockquote> Joe Laitin reports that reporters at Bikini were questioning an army lieutenant about what weapons would be used in the next war. “I dunno,” he said, “but in the war after the next war, sure as Hell, they’ll be using spears!” </blockquote>
: It seems plausible, therefore, that Einstein may have been quoting or paraphrasing an expression which he had heard or read elsewhere.
1940s
Variant: I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.

Introduction to "So Long Mom (A Song For World War III)
That Was the Year That Was (1965)

Source: Call of Duty: My Life Before, During and After the Band of Brothers (2008), p. 250

America’s War for the Greater Middle East: A Military History (2016).