Complete the following sentence: In the Russo-Japanese War, he won a crushing victory in the Battle of Tsushima. <unk> <unk> <unk>
<unk> <unk> <unk> <unk> As a result, this operation had a great influence on the cession of southern Sakhalin in the Treaty of Portsmouth.<unk> As a result, this operation had a great influence on the cession of southern Sakhalin in the Treaty of Portsmouth.