No. The Chinese have already developed frontier models. And we would be fools to assume that's a permanent end to the list. North Korea has nuclear weapons. Iran has ballistic missiles and leading edge military drones. There is no fundamental reason why both countries shouldn't be able to train frontier AI models.

Trying to protect ourselves by putting restrictions on the technology would be like trying to hide from a tiger by wrapping a towel around our heads on the basis that if we can't see it then it can't see us. That trick only works on imaginary monsters, not real ones.