They should rather seize the property of a company trying to make a country involved in war and endangering its population by operating military actions from that country soil.
And by your own argument, Bulgaria would also be at war with Russia then, since Bulgaria has been supporting Ukraine with weapons and material in this war.
They should rather seize the property of a company trying to make a country involved in war and endangering its population by operating military actions from that country soil.
You're stretching it beyond sound reason.
And by your own argument, Bulgaria would also be at war with Russia then, since Bulgaria has been supporting Ukraine with weapons and material in this war.
Then Bulgaria is a legitimate target. As any other country "supporting <a_war_party> with weapons and material in this war."