Just stumbled across this alanqua:
"In the early 1960s, the USAF launched a competition to procure a light fighter aircraft for its allies. The idea was to obtain an inexpensive aircraft intended mainly for export to South America, Africa and Asia. In fact, the Northrop F-5A Freedom Fighter, which had just flown and had been built according to these principles, was already in the sights. Lockheed's F-104 was also presented in this competition.
Boeing had no fighter to oppose it, but Dassault came to its aid with its Mirage IIIC, which it offered to Boeing. The idea was to have it built under license by Boeing at its factory in Wichita, Kansas.
The new device was called Mirage IIIW (for Wichita, therefore). Pratt & Whitney was to build the Atar 9B under license and Hughes was to build the Aida radar as well. The aircraft obtained would therefore have been very close to the Mirage IIIC, with only the entirely American weapon system. It could carry 4 tons of weaponry.
The aircraft manufacturers were enthusiastic and the negotiations went well. Boeing obtained a product to present to this market and developed its military branch. Dassault could hope to penetrate the American market. The agreement was signed on December 23, 1961. A small model was even made on this occasion. Boeing was planning to deliver the Mirage IIIW to Vietnam and was also starting to take an interest in the Mirage III V. A market of 600 units was expected.
But the project failed after a few months for several reasons. The opposition did not come only from the United States as one might think, but also from France. She was on the verge of leaving NATO Integrated Command and did not like the idea of the Mirage IIIW. In addition to the reluctance of the United States towards foreign military aircraft, it was also necessary to take into account Boeing's desire to devote itself instead to the TFX, a tactical fighter of varying sizes. The F-5A Freedom Fighter was the big winner of this competition."
(Source:https://aviationsmilitaires.net/v3/kb/aircraft/show/17429/dassault-mirage-iii-w)
Regards
Pioneer
