1.
7. A thrust into Caucasus oil fields and Persia and Iraq secure oily supplies and deny these to British forces.
I think a thrust such as this would have kept going until it reached the Suez with Egypt then lost.
A WHAT IF scenario written years ago suggested that if Hitler had not invaded Russia but instead thrust from Eastern Europe/Greece etc into Middle East they would have put Egypt in a pincer between Rommel and Army driving through Syria / Palestine.