Finally, I understand the connections between
Ronald Reagan's Navy Strategy, Free-Trade, and Mahan's Theory.
The U.S. doesnot have to arm herself with huge Forces.
The U.S. must make cars and export those cars form the U.S. to the world.
(1) Free-Trade benefits industrially-advanced-nations (technologically-developed-nat ions).
AND, the U.S. is NOT a industrially-advanced-nations (technologically-developed-nat ions).
The U.S. now is exporting soybeans and corns, and the U.S. is importing cars and home-electric-appliances.
(2) So, industrially-advanced-nations (technologically-developed-nat ions) build NAVIES by thermselves in order to protect Free-Trade.
AND, therefore, the U.S. doesnot have to build strong NAcvy.
I admit that Alfred Thayer Mahan saiod differently.
His concept of "sea power" was based on the idea that countries with greater naval power will have greater worldwide impact.
His ideas still permeate the U.S. Navy Doctrine.
People adopt theories which are profitable to them.
In fact, in W.W.II. not only Germany but also the U.S. condacted commerce-rading.
It is well known that
German-submarines drove British to the brink of asphyxiation twice,
the U.S.Navy submarines destroyed Japan.
In fact, the U.S. have been historically emphasizing the importance of trade between the Atlantic.
After W.W.II., this tendency grew, because today no coyuntry has colonies.
So, doctrine of the U.S. may be different from Mahan's theory.
Only the Pacific Ocean after W.W.II. applies Mahan's theory.
Even in 1930s', the U.S. already gave up to protect Philippines from attacks of Japan.
That is, the U.S. herself admit that the U.S. could not prevent Japan from invading Philippines.
The U.S. would counterattack Japan in order to recapture Philippines after Japan invaded Philippines.
People adopt theories which are convenient for them.
People accept Mahan's theory
only in order to justify "the U.S.-Japan Security Treaty" and "the huge U.S.Navy".
And, this is the reasoning of Ronald Reagan's theory.
In fact, all Battle-Ships in the world were retired.
(Ohio, Iowa, etc.)
Today, Air-Force is the decisive power.
After all, Navy's aircraft-carriers too mean that
aircraft-carriers can provide Air-Forces to any desired places.
Defence of sea lines of communication (sea lanes) is the main mission of Navies.
Sea lines of communication (sea lanes) means Trade.
By the way, no one imagined that
the U.S. and Soviet-Union could trade till the U.S. exported graines to Soviet-Union in 1972.
Till then, the U.S. had been preparing her Navy
on the assumption that
Soviet-Union would destroy trade between the U.S. and Europe between the Atlantic.
On the other hand,
Japan and the U.S. admit that
the U.S. can trade with China.
So, if the U.S. can trade with China,
there is no need for the 7th fleet of the U.S.
The problem is only with Japan.
The problem become only the defense problem of Japan.
And, it is Japan's duty.
Protecting Japan is NEVER our Americans' job.
Protecting Jana is Japan's job.
Navies' job is to keep trade.
The Continental System or Continental Blockade was one example.
Who doenot want to trade with the U.S.?
Who does prevent America's trade?
This means that
the U.S. doesnot have to have Navy.
(Yes. I admit that this opinion is extreme.)
The job of Navy is to protect export-trading-partner, import-trading-partner, and trade-partner.
those who may and caninterrupt these trade
may be only Iran.