basically defense in this game is just a joke. You don't really have any defense at all since anyone with almost any stats can raid your buildings.
My question is why do we keep playing? With broken game mechanics and no plan from Gree if you're spending money on this game you're might as well use it in your fireplace for heat. There is NO VALUE for anything you buy in game since there is no clear game mechanic set out in advance.
At this point I think I've logged in about 10 times a month unless we have a faction event then I play to support the faction but even then I'm barely involved. I've just moved on to other games that actually have plans, mechanics that don't change and communication with players. MW was potentially the best game too bad they just hooped it into a piece of crap.