Do you think the Russian Federation or the People's Republic of China is going to sign it? You're familiar with the Budapest memorandum, I'm sure. Russia didn't honour that when they invaded Ukraine. I'm sure you're familiar with the Minsk I and Minsk II treaties. The Russian Federation never honoured those. They were supposed to be in the nuclear non-proliferation treaty and were supposed to reduce the overall nuclear arsenal they had, but instead they've ramped up the production of nuclear weapons. Then Beijing signed with the United Kingdom the Sino-British Joint Declaration, which was supposed to be good until 2047, and they walked away from it in 2014.
Why would we trust them to sign this when they're both very interested in having a strategic advantage in space?