Nigerian President Mohammadu Buhari (R) shakes hand with Iran Ambassador to Nigeria Morteza Rahimi Zarchi, while Iranian Foreign Minister Mohammad Javad Zarif (C) stands during their visit to the presidency in Abuja, on July 25, 2016. Iran Foreign Minister Mohammad Javad Zarif is in Nigeria on the first leg of a four-nation tour of West Africa, which will take him to Ghana, Guinea-Conakry and Mali to discuss possible ways of expanding relations with the countries.  STRINGER / AFP
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