No, fundamentally geographically US fleet is always going to be split into East coast & West coast.
The USN has responsibilities around the world and will be split all over the place... but then it is the same with everything... the navy units in Pearl Harbour on December 7th 1941 probably didn't really feel they had the full might of the US military behind them as they were ducking and diving to avoid incoming bombs...
You could turn it around and say that splitting the Russian Naval forces also splits up any attacking force because defeating just one piece will not win you any prizes... in fact you will find that much of the defence of Russian coasts comes from air launched anti ship missiles... which could be rotated around the country in less time than it would take to form up an attacking force...
Through military & political domination of Panama they have a relatively secure & rapid way to transfer between.
Which could be easily mined or damaged or simply blocked... more importantly left alone... let them send their ships... say hello Kinzhal and Kh-32 and Zircon...
Russian fleet is split North/Baltic/Black Sea/Pacific at far flung corners of the country with easily blocked choke points on the exits & large lengths of potentially hostile coastlines between meaning they operate as almost completely separate entities.
Any carrier group is expected to operate on its own without immediate support... and choke points works both ways...
But China has a single continuous coastline.
So one area to mine and bomb... and no back door.
Russia can transfer boats between several of her bases through inland canals so they are not that isolated...
Its split into 3 fleet commands but because they're directly adjacent along the same coastline it can be considered essentially one big fleet.
So what you are almost saying is that they could have one single fleet but they prefer to split the force down into more manageable and perhaps flexible groupings?
And good luck blocking Bosphorus (let alone Bering strait). Russia would hardly tolerate such a violation of international freedom of passage, but given its good relations with Turkey, its more probable Turkey would block Bosphorus for its western "allies".
That brings up an interesting point... why hasn't the US rushed a cruiser into the black sea to take advantage of the Sea of Azov situation... did Turkey say no?
What good relation ? They almost started a war over syria few years ago. Erdogan had no choice to be good with putin since US wanted to remove him. Tomorrow when US/Turkey relation get better, turkey/russia won't be as good as today.
Confusing... you start by questioning that there is a good relationship between Russia and Turkey ATM, but then talk of a future where relations are not so friendly?
Bosphorus strait is vital t russia. They won't bet on Erdogan's feelings towards them to keep it open for their ships.
I would trust Putins skills are keeping civil relations with Turkey more than I would trust Trumps skills at farting and walking at the same time.
I just realized that China didn't have more than 10 fully modern destroyers
In a warm moist environment with lots of food, bacteria multiply at an exponential rate.
The change in an hour is impressive... a day shocking... but eventually they reach the edge of the container, or they outgrow their food supply... or something bigger comes along and recognises the threat and pours bleach on them or eats them.
On paper from a single cell organism that divides every hour and doubles with each division... in a year you would have a mass the size of the earth... but you don't.
The transformation and growth is amazing... but only because they went from almost nothing to something and then they caught up... in 3 years time they wont have thousands of destroyers... they might have 40 ships with nothing to do...