Originally Posted by DCL
the fundamental teaching of islam is about jihad
Of The Self, which is another way of staying Man vs Man.
And that's not the fundamental teaching. The fundamental teaching is "There is Only One God, to worship One God alone without any partners", according to Yusuf Estes. Regular prayers and charity being staples along with fasting and pilgrimage.
As for Nick, his actions and thoughts speak for themselves on Judgment Day.