又快到交论文的时候了。小弟感觉有些无从下手，希望得到大家的一些帮助。题目是:“essentially porter claims that the success of a business strategy of a corporation in an industry depends as much on the national environment as it does on the five forces”examine this statement.

应该从那些方面，如何来考察这个陈述呢？请给点启发吧。谢谢大家