 Why do the Vegans want the humans to be involved in their political struggle?
He ignored the snarling, the spitting, the waving of boneless prehensile fingers, as he ignored the heavy gravity and heavier air of the unfamiliar planet. These humanoids had large mouths and sharp teeth, and they unquestionably slavered. If they carried out the threats of their present attitude, Earth would have to send Marshall to replace him. "Just tell him that a man has arrived from Earth to talk to him. Behind him stood a heavy and pompous appearing Vegan in lordly trappings. "But then I'm told you're an Earthling. "It was only decided yesterday, back on Earth, that I would be the one to make the trip here. What I meant was that I expected someone from Earth to break through our blockade and come here. "If you wanted someone from Earth to come here to see you, why did you put the cordon around Earth? And why did you drop a planet-buster in the Pacific Ocean, and tell us that it was triggered to go off if we tried to use the distorter drive? But you did come, so I can tell you that although I am the leader of one of the mightiest peoples in the Galaxy, whereas there are scarcely six billions of you squatting on one minor planet, we still need each other. There are more inhabited planets in the Galaxy than there are people on your single world. I, personally, rule three hundred trillion people, half of them of my own race. "You upstart Earthlings are a strange and a frightening race," he said.
 They think the humans can add an unexpected element to their war
 They think their numbers will even the fight  They see the humans as having a complementary skillset  They are desparate and will try anything to change their situation  They think the humans can add an unexpected element to their war