lol Syn, you may not *think* your list is pretentious...but to average Joe walking down the street, your a pretentious douchebag by suggesting that is your reading list.
As for diplomacy, how have any of those book helped you in diplomacy, and more than, say, Asimov's Foundation series, or John Steakley's Armor, or The Guadalcanal Diary (for a little war history), or Harry Turtledove for alternative history (since Diplomacy is "alternative" outcomes to WWI), etc.
If you want to read a book to help you in Diplomacy, "How to Win Friends and Infuence People" is your #1 book.
All your crap is pretentious crap because you want to be an "intellectual". Sadly...based upon your forum discussion...you are certainly no more of an intellectual than any other person around here mind-farting in the forums because they're bored...
Now- don't get me wrong - it's an impressive list, and I really don't mean to be insulting you -- I'm just saying it's a pretentious list. Read what you will ...but the reality is society at large would think you pretentious.