Boingotango
Hellovan Onion
We will invade you and destroy all your infrastructure
Then we'll get bored and leave
Sounds like a sound strategy to me. Ever play Civilization? You can't just take completely take over every city and country, the upkeep and public opinion is a nightmare to keep up with. Just cripple your enemies to the point irrelevancy, while you keep growing and prospering. Don't you know anything?