How can I reduce the number of terms in this sorites?

I am working on a practice exercise in which I am asked to "rewrite each sorites in standard form,  using the letters to represent the terms and reducing the number of terms whenever necessary". (For anyone   unfamiliar a sorites involves more than three terms). I would like some help reducing the number of terms. Thank you in advance:

No restrictive trade policies fail to invite retaliation.

Trade wars threaten our standard of living.

Some Chinese trade policies are restrictive.

Policies that invite retaliation lead to a trade war.

Therefore, some Chinese trade policies threaten our standard of living.