You cannot fight someone who doesn't fear you!

The Americans wanted to attack Iraq:

Americans: We are going to attack you!
Iraqis: Ok!
Americans: Hey, listen, I said we are going to attack you!
Iraqis: Ok! come!
Americans: You are not afraid? We said we are going to invade Iraq!
Iraqis: You want to invade Iraq? ok! come!
Americans: Are you stupid? We said we are going to attack you, to invade Iraq and to kill you!
Iraqis: You want to kill me? You want to kill me?!?! I kill me! Then I kill you too!

You cannot fight someone who does not fear you!

And this applies also to all day life - stay cool! stay chill! stay relaxed!