Statesmen-funders of Defence capability are not techno-, but are sovereignty-centric. We should look at this through those eyes.
Received narrative in UK is that US 8/46 McMahon Act stole our Bomb. It also, then, stole Canada's Bomb (ZEEP/Chalk River), and France's (Joliot-Curies). UK narrative is that Ike amended it to permit UK data access 7/58 under a pang of guilt, but then denied France that access.
So, annoyed, CDG did his solo Force de Frappe and Dassault flourished.
But, no. Statesmen don't lose sleep in 1958 over an Ally being upset by (perceived) disrespect in 1946. Ike had consigned McMahon to Archive immediately on his Inauguration, 1/53. Its purpose had been to put use of AW in President's hands, not Macarthur's or LeMay's.
In Ike's time USAEC lost all* AW custody and Commanders acquired them.
Suez, 11/56, was a lesson read differently in UK and France. New (10/1/57) UK PM Macmillan inherited a glacially-slow, uncapped-cost AW programme. He chose to abandon expensive AW Independence and to target-integrate Bomber Command and USAF/SAC, 1/7/58. The Mutual Defense Agreement, 4/8/58 gave UK selected AW data access.
New (1/6/58) French PM CDG inherited a paused AW programme; 17/6/58 assigned it Highest National Priority, and 17/9/58 tried to join the Anglos' AW Directorate. Denied, he pressed on solo, giving "absolute priority" 3/59 to AN-11/Mirage IVA. In 10/62 "US agreed to sell France (a PWR reactor)”, INS, tools for rocket motors, (K)C-135F. Weapon design data passed to CEA/DAM. J.Newhouse,Nuclear Age, Joseph,89,P324; I.Clark,Nuc.Diplomacy, Clarendon,94,P405. If only that had been agreed in 1958.
If...Ike had not (appeared to have) spurned CDG, 17/6/58 but had sought a repeat of UK's agreement to assign AW to NATO "save where (supreme) national interests are at stake”, then: France could have bought/licensed US delivery platforms for, either, US dual key weapons, like FRG and others did, or have gallified US Bomb designs, to much economic benefit. No Mirage IVA. No AMD dominance.
(*amended 15/6/22: by 6/59 USAEC: 3,968 weapons, DoD 8,337. fas.org/nuke/norris/nuc_11309901a_010.)