“and here the Second Reich was deliberately flouting the Monroe Doctrine”
Leaving aside your second reich ignorance, you are aware that the Monroe doctrine was also meant to keep America out of the pointless and endless European wars?
No; it was to keep Europe away from the rest of the Americas so that they would not threaten the USA’s southern borders. Is this a way of saying that Kerry declaring it “over” was a good thing for the USA?
As for “endless wars”, Washington warned the USA to be “at all times ready for war” rather than thinking we could eternally be isolated from that scourge, or “avoid insult” without “be(ing) able to repel it”; he was the first to promulgate “peace through strength”, as Reagan later articulated the policy. Things had gotten so decadent under Wilson that he could actually get successfully re-elected on such a craven slogan as “He Kept Us Out Of War”. The people were not afraid of Germany for no reason, in spite of that.