It would be interesting to know the history of this video since in 1946 the only country that had working atomic weapons was the USA. At least I now know where Dr. Bronner got the phrase, "one world or none".
Moreover, the one nation that had nukes was ramping up from the capability to make one small 20,000 kt bomb every 2 months to maybe 2 a month. Wait a year, and you might have enough to flatten Queens, but not really enough to turn any conventional war.