Please, any direction to understand this term "abstract metrics"?
If China did so in the Western Pacific, it could dominate the world’s largest and most economically dynamic region. If Russia did so, it could fracture NATO and open Eastern Europe to Russian dominance. Beijing and Moscow must therefore not be given such an opening, which is why Washington must focus not on abstract metrics of its military superiority—such as how many carriers it puts to sea or how much it spends in comparison to other countries
I think the author is using "abstract" as "theoretical" in the sense of "unhelpful", "irrelevant", or "inapplicable". "metrics" are measurements, in this case inventories of weapons and the like. So, ...
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I think the author is using "abstract" as "theoretical" in the sense of "unhelpful", "irrelevant", or "inapplicable". "metrics" are measurements, in this case inventories of weapons and the like.
So,
... which is why Washington must focus not on counting the number of tanks, missile launchers, helicopters, and so on, which are not germane to the problem at hand, ...
C