Satao was a 45-year-old Kenyan elephant with tusks so long they brushed the ground. Poachers killed him in June with a poisoned arrow. African leaders gathered in Washington said there needs to be better cooperation on the continent to prevent poaching. Tsavo Trust hide caption

itoggle caption Tsavo Trust

Scores of African leaders gather in Washington this week at an unprecedented summit organized by President Obama. Paul J. Richards /AFP/Getty Images hide caption

itoggle caption Paul J. Richards /AFP/Getty Images

Two customers sit having a drink in the Diani Sea resort in Diani, Kenya, outside Mombasa, on May 16. Travel advisories issued by Western countries are hitting Mombasa hard, forcing hotel closures and thousands of workers to lose their jobs. Ivan Lieman/AFP/Getty Images hide caption

itoggle caption Ivan Lieman/AFP/Getty Images

Women carry sticks in Ganyliel, South Sudan, an area protected from the violence in the country due to its isolation. But food there is scarce. Gregory Warner/NPR hide caption

itoggle caption Gregory Warner/NPR

A man cleans up the site of Tuesday's car bomb explosion in Jos, Nigeria, on Thursday. The city was spared deadly reprisals, in part because a peace group intervened. Sunday Alamba/AP hide caption

itoggle caption Sunday Alamba/AP

A still image taken from a video that the extremist group Boko Haram says is of more than 100 girls who were abducted from a Nigerian school last month. Rebel kidnappings of girls has become increasingly common in African conflicts. AFP/YouTube hide caption

itoggle caption AFP/YouTube