please remeber this:

"Now, since there is nothing I stated above that a well-informed person like yourself should not already know, I would ask you to bring foward what you know that makes you think nigeria has no credibility in African affairs. What information (or direct knowledge) is this opinion based on?"
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then you would probably be able to answe this:

"Why did you repost the bit about nigeria?"

"In my response to you, I said nothing about nigeria because as far as I was concerned, I had already said as much as I needed to say about nigeria (with regards to the matter under discussion)."