The difference is the State claims the (legal) right to lethal force. It’s still murder. Terrorists (or freedom fighters, depending on outlook) that kill people are murderers. They probably also claim the right to lethal force, which is still murder.
Murder is specifically extra-legal, and as states define their own laws so long as their militaries abide by the laws of their host country and international regulations for warfare it isn’t murder.
Both are mass murder.
The difference is the State claims the (legal) right to lethal force. It’s still murder. Terrorists (or freedom fighters, depending on outlook) that kill people are murderers. They probably also claim the right to lethal force, which is still murder.
Murder is specifically extra-legal, and as states define their own laws so long as their militaries abide by the laws of their host country and international regulations for warfare it isn’t murder.
They are both killing, however.