Key word: "ANY ONE". We're already stretched too thin. In the 60s and 70's we operated 13-15 aircraft carrier battle groups ..... and we had no naval opponent of any stature. Now we have China to deal with, which is laying out pieces for a setpiece victory over the United States Navy that could end up being a civilizational loss for the West, like Manzikert in the Middle Ages (Turks defeated Byzantine Greeks in a close contest that led eventually to the Greeks' abandonment of eastern Anatolia and the Holy Land, the closure of Jerusalem to Christian pilgrims by the Turks, and the Crusades).
Consequences, consequences. You can't lose one to people like the Chinese.
No, I did not mean any ONE, I mean anyone. The Chinese may be getting powerful, but to oppose them is not just the US, but also Japan, India, Australia, Vietnam, South Korea, Singapore etc.
the problem with that analogy is that the Byzantines were not "Greeks" -- they believed themselve to be Romans, a continuation of Rome. They called themselves Romaoi and the Turks called their land Rum.
also in 1071, the Byzantines held themselves to be the holders of civilisation (there was no "western civilization" in their opinion as the westerners were barbarians, almost as bad as the Saracens)
Also, the analogy is wrong because it was just the Byzantines facing the Turks and the Bulgarians (who technically were Turkic) -- in the present day, China is opposed by a whole string of nations: Japan, India, Australia have navies powerful enough to contain China without American help