蜜芽传媒

The Nigerian president, Muhammadu Buhari, is in Washington to meet Barack Obama. He'll ask for help fighting the vicious Islamist insurgency of Boko Haram. But what will President Obama be hoping to get out of it for the US? Dr Robin Sanders was US Ambassador to Nigeria from 2007-2010 has been talking to Nuala McGovern.

(Picture: Ambassador Robin Renee Sanders in New York in Sept 2014. Credit: Bennett Raglin/Getty Images for The African-American Institute)