That's what has been done until now. Germany even had an explicit policy of economic interdependence to make a war unimaginable. You can see how well that worked, right?
And they don't have it anymore. Those people who _actually_ protested and got beaten and arrested by _real_ tyrannical governments are being told by their government "see I told you they hate us" while also being criticized for "not doing enough" by people like you who probably never experienced what is to live outside of the privileged 13% humans who are born in stable democracies.