Could Russia have won the Russo-Japanese War?

What if the Russian Empire won the Russo-Japanese War?

Russia had manpower for further fighting, but reversing the outcome required overcoming Japanese control of the sea and Russian transport constraints; an advance against Japan itself could also bring another power into the war.

Russia's larger manpower pool made renewed land fighting seem promising in principle. Japanese control of the sea, however, allowed reinforcements to arrive over a much broader supply route than Russia's fragmented Trans-Siberian railway. Rail ferries, breaks in through traffic, and transfers between transport systems limited Russian supply. One proposed naval opportunity would follow the loss of Japanese battleships to mines, provided Russia retained a capable commander able to exploit it. An apparent earlier Russian tactical advantage is treated cautiously because Japanese maneuvers may have been drawing the fleet away from safety, although an uncompleted trap cannot be demonstrated. The counterfactual also anticipates intervention by another power if Russia threatened Japan itself.