The State Department cited unspecified security concerns in announcing the unusual move. A closely fought presidential election in Brazil takes place on Sunday.

© Bruna Prado/Getty Images

The Nigerian secured office space in a federal building, opened bank accounts and even held meetings with foreign diplomats. He says he is innocent.

© Marvellous Durowaiye/Reuters

The president has often reached for statues of the national bird on diplomatic occasions in his second term. (Ronald Reagan favored them, too.)

© Doug Mills/The New York Times