When Alexander the Great threatened the people of Scythia, their ambassadors reminded him that a conqueror has many more burdens to carry than an ally has.
In 329 BC, during his Persian Campaign, Alexander the Great defeated the Scythians at the Battle of Jaxartes near Cyropolis, now Khujand in Tajikistan. Prior to the battle, the Scythians (a people of the steppes) warned him that allies were better then enemies, and customers better than slaves, and that those who thought themselves exceptional should not behave like everyday tinpot tyrants.