History often repeats itself. In a similar way, Great Powers like France refused to study the lessons of the Russo-Japanese war of 1904-5 because it was something that happened in barbarian lands far away from glorious Europe, so it was obviously irrelevant to them, right? And then the shock of industrial warfare almost shattered the French army in summer 1914.

The US must out of necessity respond to this attack that was carried out of necessity in response to US' attack. It's "attacks out of necessity" all the way down... until that one initial attack which was a necessity only if you see it as Trump needing to respond to people/country other than his own.

The USA is the Russia of the West nowadays.