I agree the numbers are significant. Another to consider is related to Zechariah 12:3:
"On that day, when all the nations of the earth are gathered against her, I will make Jerusalem an immovable rock for all the nations. All who try to move it will injure themselves."
There were 70 original nations, all from the descendants of Noah. So 70 nations coming against Israel during this UN meeting gets my attention in that they may represent All nations per Zechariah 12:3.
wow.