What will happen if at the end Russia succeed in her conquest against Ukraine and take over the economy of Ukraine. That will extend the economic power of Russia no doubt and that will make Russia more powerful.
How will EU and NATO countries relate with Russia if that happens ?
Sanctions after sanctions, these will surely make Russia suffer even after they takeover kyiv. I think even if they could have Ukraine, the effect of international sanctions that they are facing will be massive in terms of economic drop. However, if they could find alternatives to these given sanctions added by the land and natural resources that Ukraine has, they could potentially be more powerful.