Yes, in perfect world. I'm sure we can all find harmony with an authoritarian dictator disgusted as a democracy

There is no need for a "perfect world", the amount of conflict can easily be reduced provided that pragmatism and mutual recognition (as opposed to attempts at issuing ultimatums and threats) prevails.

Based on your attitude you're a realist, so obviously there is a question of why would internal organization of a state matter (or at least matter so much) when it comes to international relations? The American "we don't negotiate with dictators" principle doesn't seem to work when it comes to "friendship" with Saudi Arabia or UAE, even though it's indisputable they are much more dictatorial than Russia.

When actions of "authoritarian dictatorships" (presumably you mean Russia) are consistently way less destructive than actions of true democracy (presumably the US), does the internal organization of the state somehow excuse its external actions vis-a-vis other states? I don't think the people in the Middle East and North Africa who became "collateral damage" find any consolation in that "at least it's a democratic country that does this and not some bad dictatorship".