Final answer:
Napoleon believes in a strong military presence, while Snowball prefers diplomacy and alliances.
Step-by-step explanation:
Napoleon and Snowball have different ideas about the defense of the farm in the book Animal Farm. Napoleon believes in a strong military presence and focuses on secrecy and espionage, while Snowball prefers diplomacy, alliances, and open confrontation. Napoleon's approach is represented by his enforcement of a strong and powerful military force, while Snowball's approach is represented by his emphasis on negotiation and cooperation with neighboring farms.