Sentence:  It occurred to me that you might be interested in some thoughts which I expressed privately in recent years , in the hope of <WSD>clearing</WSD> up a certain confusion in the public mind about what foreign policy is all about and what it means , and of developing a certain compassion for those who are carrying such responsibilities inside Government . 
Meaning of the word marked with <WSD> tags:  make clear and (more) comprehensible