Tiger By The Tail
Written by
Poul Anderson
Copyright 1951
First appearing in Planet Stories, Jan 1951. Captain Dominic Flandry has been kidnapped and hauled to a planet belonging to the Scothani, a small empire outside the Terran Empire and one that is hoping to conquer the bigger realm. As his captures make him a slave to extract as much intel as they can, he assumes the role of advisor to corrupt from within. Contained in the collection .