General Discussion

Thr Russian fleet that is bottled up is in a small area.

But. A while ago The Economist was discussing the US navy and the ability to use it on China.
Not very good. Land based missiles are good for nearly 1,000 miles. This puts their fancy planes too far away without refueling.
Defensive systems are getting better at targeting at range. You do need a fleet to support an aircraft carrier. The same will hold true for a battle ship.