In a decisive 122-1 vote at the United Nations, a global ban on nuclear weapons was approved,a massively important step toward disarmament made somewhat less impactful by all the current nuclear-armed states boycotting the meetings.
Which doesn't mean there weren't major powers signing the deal. Brazil was a noteworthy signatory, and both Iran and Saudi Arabia signed on the dotted line, along with Egypt, which appears to dramatically reduce the risk of a nuclear arms race in the Middle East.
The sole dissenting vote was also the sole NATO member to even attend the meetings, the Netherlands. They've hosted US nuclear arms in the past, and appeared loathe to sign on to a deal that would effectively oblige them to stop such hosting deals.