This is a peace sign.
It is based on what two letters in semaphore?
(Think of organisations that might have been opposed to 20th century weapons.)
The first new player to comment on the website with the correct answer wins a free drink at their next iQ Trivia show.
A and I? Thinking Amnesty International.
Not AI. Another anti-weapon group.
N and D for nuclear disarmament I believe.
That’s correct. The CND created this as a logo out of the semaphore letters for N and D.
Apparently they also thought it looked like a person with their hands out in despair.