First one to get the (nuclear|genetic|quantum decryptor| ...) superweapon wins. That's been always true. Any government who's currently protesting and proclaiming they never will partake in it are either (1) idiots or (2) lying.
This was a straightforwards application of well understood and disseminated science, it is entirely unlike a secret superweapon. Even if this technique is banned in the US and not in China I have no doubt that many Americans would still play medical tourist to have enhanced babies. There might be large differences in the willingness of Chinese versus American parents to have their children modified but that isn't a m…
I strongly support further research in this area and think that regulatory means to stop it will be both ineffectual and harmful.