The Almudaina Palace (left) is one of two royal palaces on Spain's Mallorca island. Lauren Frayer for NPR hide caption

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Nadezhda Tolokonnikova (center) and Maria Alyokhina (left) leave a police station near Sochi on Feb. 18, 2014. They'd been arrested earlier in the host city of the 2014 Winter Olympics and walked free after being questioned about an alleged theft from a hotel. AFP/AFP/Getty Images hide caption

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An image from the Corruption Perceptions Index shows the U.S. with a score of 76, on a scale of 0-100. The top spot (judged the least corrupt) was taken by Denmark, with a score of 91. Screengrab by NPR hide caption

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Nigeria's former national security adviser Sambo Dasuki (center) arrives at the Federal High Court in Abuja on Dec. 14 for a hearing on charges of possessing weapons illegally. Olamikan Gbemiga /AP hide caption

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Every member of the board for the Museum of Political Corruption received this "kickback" button in their information folders at a recent meeting. Jessica Bloustein Marshall for NPR hide caption

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George Filenko, commander of the Lake County Major Crime Task Force (left) and Chris Covelli with the Lake County Sheriff's Department talk during a news conference at the police station on Sept. 2 in Fox Lake, Ill. Michael Schmidt/AP hide caption

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Angelica Rivera, the wife of Mexico's President Enrique Pena Nieto, has been embroiled in controversy over the purchase of a luxury home. Thomas Samson/AP hide caption

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A man in Nairobi, Kenya, stands in front of a mural of President Obama, created by the Kenyan graffiti artist Bankslave, ahead of Obama's trip to Kenya and Ethiopia. Ben Curtis/AP hide caption

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This screen grab of video from a security camera, dated July 11 and released by Mexico's National Security Commission, shows the man Mexican authorities say is Guzman inside his cell at the Altiplano maximum security prison, looking at the shower floor shortly before escaping through a tunnel below. AP hide caption

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