"In late February 2002, I arrived in Niger"....where "I had been a diplomat in the mid 70's".
So he had all these connections but hadn't been there in 30 years? How old is Joe?
You can be sure Wilson had been in Africa many times from the 1970s to 2002, just read:
http://www.freerepublic.com/focus/news/1256475/posts
What Joe Wilson Doesn't Say About Africa