Should someone explain to French Pres the meaning of nationalism? He claimed "nationalism is the betrayal of patriotism"

As an aside:
An argument can be made for arrogance as a cause of the US Civil War. 

Arrogance also misled the Japanese into attacking Pearl Harbor. Hitler’s unhinged arrogance was a seminal force of WWII.
Would we more correctly call these Nationalism or patriotism? 

In fairness, I think it’s a stretch to say that Tom meant all wars. More to the point of the conditions for war. 

Stu Bee,

I commented in an earlier response to you that you apparently have a "respectable amount of knowledge"---it appears something equivalent to a recount may be in order.

And you don't know whom I voted for either.

Tip of the iceberg, Tom.