Sentence:  When necessary , we should make it clear that countries which choose to derive marginal advantages from the cold war or to exploit their potential for disrupting the security of the world will not only lose our sympathy but also risk their own prospects for orderly <WSD>development</WSD> . 
Meaning of the word marked with <WSD> tags:  a process in which something passes by degrees to a different stage (especially a more advanced or mature stage)