Well Phizzy I'd have to disagree............to a degree. After all, when they joined there was a great distinction between the two types of NGOs.
I've noticed since lurking on here that there seems to be a distinct preference to not only play down the important distinction, but to totally disregard it AND to not make adequate reference to it either. Surely in the pursuit of honest argumentation ALL teh facts should be made known and discussed.
The one had a requirement to support the charter of the UN, the other, as you say, to "educate the world about the aims and purposes of the UN.....
......which as far as I can tell, they did, whilst at the same time also stating that, inspite of it's stated aims and "purpose", the UN and earthly governments, indeed mankind in general, would never be able to solve the problems facing the Earth and Mankind without God. They've always written about the UN's stated purpose, even before becoming a registered Non governmental organisation, and at the same time always explained their viewpoint, I.E, that the UN is the Wild beast mentioned in the book of Revalation. Seems a little unfair to compare it to joining the NADSP...........to get a library card...........especially since they didn't join the UN in any real sense at all.
Just my tuppence worth on the subject.