TEODORO OBIANG, the dictator of oil-rich Equatorial Guinea, is used to shady guests. A decade ago, his Black Beach prison held Simon Mann, a British mercenary who was sentenced to 34 years for his role in the botched "Wonga coup" that tried to topple him. (Mr Mann won a presidential pardon in 2009.) In a fresh act of mercy, Mr Obiang has taken in another guest, whose quarters will doubtless be cushier. On January 21st he welcomed Yahya Jammeh, the former dictator of Gambia, whose people had tired of him after 22 years.
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