As someone who participated in last war being 13-17 yrs old, i can tell you that the next big conflict on world stage will drive remaining serbs on the other bank of Drina river - to Serbia.
Republika Srpska dont have any army, power or friends. They have only corrupt politicians, war deserters and profiteers like Dodik and his clique.
They and their kids dont have clue how the war looks like, and thats why they are fueling hate and calling for independence. When it starts, they will flee again with their kids and grandchildren.
Also, Republika Srpska is something that Serbs never really wanted, or been fighting and dying for, as its presented today. We didnt had clue about Republika Srpska. Noone would go to war for any Republika Srpska. We were fighting for survival of Yugoslavia, or more precisely, to remain in one state with Serbia. Republika Srpska is just consequence of peace talks, USA meddling and propaganda and NATO airstrikes.
It wont be easy to cause the war here without foreign money and intervention. Everyone here, Serbs, Bosniaks, Croats - are justfed up enough with their warmongering. Noone who got hit by the last war will go to another. If mr Dodik wants his private country, he can give the rifle to his own son and send him to frontline.