Depends on who is judging and the mechanism, doesn’t it? If we have an alliance and a UN resolution, it seems to be we have an agreement about who is in the right and who is the belligerent being sanctioned. refusing to buy or sell goods is a legal recourse . If we don’t have that buy in, then a blockade would be an act of war.
I guess it’s not as simple as I was making it out to be.
Thanks.