Use of second "the" in "The Art of the Deal"?

I don't know, but I always feel the use of the second the in Trump's book title "The Art of the Deal" is weird. It sounds like it's referring to a specific deal that he made. We wouldn't say "The Art of the War", or "The Art of the Movement", the second the totally changed the meaning of the title. So my question is:

Is that title correct?

He could have said the "Art of Deals", but saying The Deal places the word in a unique category which the Art of a Deal does not convey, nor even the Art of Deals. The Deal becomes a pursuit.

A similar construction in a book title might be " the Art of The Chase" or "the Excitement of The Chase" = books about hunting.