The Ideal Society that you establish shall have sound socio-economic fabric and Rule of Law. That would enable you to thwart aggression from any quarters. You won't then, behave cowardly like those who were thousands in numbers, but when challenged by the enemy, they ran in droves leaving their homes behind. They feared death. Then they realized that the Divine Law of mortality is inescapable, hence the fear of death is vain. Soon, they stood up on their feet and defeated the enemy. They lived again. Allah's Guidance is a Bounty to mankind but the majority of the people do not realize and appreciate this fact.