Porters Diamond 

Michael Porters “The Diamond Model” was publiced in 1990 in his book ”The Competitive Advantage of Nations”.
It’s a model that can help us understand why a nation become the home base for successful international competitors in a particular industry and other nations don’t.
He argues, that the old teories - made by Adam Smith and David Ricardo - is not sufficient to explain competitiveness between technology advantage nations of today
Also see:
* Porter’s Five Forces
* Porter’s Generic Strategy
* Porter’s Value Chain