They may be proud, but they are not suicidal.
Nor are we. We spent 40 years in a MAD posture with the Soviet Union. There is a lot of theory on what steps require what reactions in the escalation of threat levels between them and us. Even some actual real-world experience. Do we nuke their homeland thereby ensuring our own destruction in response to their nuking one of our carrier battle groups? It’s not as simple as “they are not suicidal.” Not anywhere close.