Yes. Sanctions for military goods. Nothing against the civilian population.

And also against involved persons and organisations of course.

So should Russian oil and gas exports be blocked?

The way it is done right now? That russia sells oil to india and EU buys it from there? Not really.

So if not this imperfect way, how do you block the main source of revenue?

The sanctions are hurting Russia, so it’s at least partially effective.

"how do you block the main source of revenue?"

Why should I? How about not mixing up civilian and military targets? Current trajectory is heading straight into total war, I simply would restrain on target military targets.