Defense system is a mechanism to protect the sovereignty of Land especially the Physical sovereign. It is always linked with the Political System and International Relation and not limited to Technology.
With the changing trend of the World Politics, Economic Policies and Technology advancement, do you think we should review our National Defense System??
There should a one organization which should defend against all forms of warfare eg conventional,unconventional,economic,environmental etc.
It should have experts from all the area's and decide the strategy for the nation irrespective of which political party is in power.
Your vote on this answer has already been received
Technology developed so much ..... Itz not only physical sovereignty but also financial, emotional, science & technology itself, information technology from both internal and external factors.
National defence system & policy itself is the derivative of instinct of natural defence system of human being and naturally it adopts itself to changing situation, whether we emphasise on it or not. It is better as long as Aam Adani & media start meddling with it and leave it to defence councils and policy makers.