Balanced defense bonus

City buldings' defense bonusses very much..

for example airport 8x , barracks 8x etc.

if you build all defense building, totally 34x

if there is a stealth fighter in a city, with 34x bonusses, impossible to occupy city

building bonusses must be %25-%50

not be 2x (%100) 4x(%500)

and The total bonus must not exceed 2x (%300 strength)

---if you want us to fight----