Popa I agree and at least for myself, set out my reasoning for possibly considering the parameters of “rule” and the Jewish nature and divine hashgocho of a Jewish state in view of Rambam’s position as applicable. But as I said, as I’m not convinced 100% myself, I sure wouldn’t tell someone else it is the case.
The arguments I’ve made in the past as to why IDF or national service is a fully shared responsibility have other sources and rationales. Some of them are moral and thus implicitly rather than explicitly halachic; others are consequential to living in and benefiting from a democracy.