If I blockade you in your house, is that failure to aid? Or something else? Sanctions occur via commission, not omission. They’re not a failure to render aid or to be maximally charitable. They’re active harm.
Sanctions are omission, blockade is comission. These words are currently being conflated.
Imposing a restriction where one did not previously exist is quite obviously a commission.
A blockade is different. It is a threat to use force for disobedience. IF I threaten to beat other who willingly shop at the baker.