Waiting until a particular opponent becomes an obvious threat leaves little time to develop a defence. Maintaining layered protection in advance raises the capability an attacker needs to succeed. The comparison with locking a house explains why preparation can be sensible even without a visible attacker. Greater defensive strength also forces an opponent to spend more money, potentially providing additional warning. Domestic defence production is described as public investment as well as expenditure on protection.
Notable Point · 2:34:14-2:36:30
Why defensive preparation should precede a visible threat
A standing defensive capability can deter weaker attackers and make a stronger opponent spend more time and money preparing an attack.