Michael Tropp, an Atlanta history enthusiast, visits all presidential gravesites and recently honored Jimmy Carter's legacy at The Carter Center.
Read moreChad's government declares calm in N'Djamena following gunfire incidents, attributing clashes to security operations against attackers.
Read moreChad's government claims to have thwarted a destabilisation attempt after gunfire was heard near the presidency in N'Djamena.
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