Back in the first world war anarchists were divided on what side to take, with Kropotkin among others signing on to a manifesto advocating for anarchists to support the allied victory over the central powers. There were anarchists opposed to the war who published a counter manifesto that still seems applicable today:
The misfortune of the peoples, who were nevertheless all deeply committed to peace, is that they trusted in the State with its scheming diplomats, in democracy and in the political parties (even the opposition parties, like the parliamentary socialists) to avert war. That trust was deliberately abused and continues to be abused when those in government, with the help of their whole press, persuade their respective peoples that this war is a war of liberation.
Sanctions are just siege warfare using our trade influence to kill normal people in the hopes that the misery causes dissent against the government. Under anything but the "rules based order" they would be an act of war.