Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Former US Envoy Calls for Nuanced Diplomacy Natalie Liu WASHINGTON - American diplomacy often requires a delicate process of balancing competing needs and objectives, says a former U.S. ambassador to Nigeria who has cited that nation's fight against the Boko Haram extremist group as an example. John Campbell, author of [1]a new book on Nigeria, served as Washington's top diplomat in Africa's most populous nation from 2004 to 2007, following an earlier tour as political counselor there from 1988 to 1990. In a talk this past week at [2]the Hudson Institute think tank in Washington,Campbell cautioned policymakers and diplomats to take a "granular" approach toward complex international problems that "do not lend themselves to simplification." References 1. https://www.cfr.org/expert/john-campbell 2. https://www.hudson.org/events/1907-video-event-the-future-of-u-s-nigeria-relations-a-conversation-with-ambassador-john-campbell12021 .