Translation of "vertical proliferation" into Chinese

When there is little progress in general and complete disarmament, there is a corresponding likelihood of vertical proliferation

当全面和彻底裁军进展甚微的时候,就相应地有可能出现垂直扩散。

This is a dangerous and destabilizing trend of vertical proliferation.

这是一个危险而且破坏稳定的纵向扩散趋势。