Sentence:  When we look at countries like <WSD>Iran</WSD> , Iraq , Pakistan , and Burma , where substantial progress has been made in creating a minimum supply of modern men and of social overhead capital , and where institutions of centralized government exist , we find a second category of countries with a different set of problems and hence different priorities for policy . 
Meaning of the word marked with <WSD> tags:  a theocratic Islamic republic in the Middle East in western Asia; Iran was the core of the ancient empire that was known as Persia until 1935; rich in oil