The Westphalian treaties gave France, Sweden and later Russia the explicit right to intercede to guarantee the Imperial constitution [1]. (Westphalia was concerned with the Holy Roman Empire.)
Westphalian sovereignty as a historical concern is a myth [2].
Westphalian sovereignty as a historical concern is a myth [2].
[1] https://en.m.wikipedia.org/wiki/Guarantor_of_the_imperial_co...
[2] https://www.cambridge.org/core/journals/international-organi...