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Doctors Without Borders says that the death toll has risen to "about 90" from a Nigerian military airstrike Tuesday on a displaced persons camps in the country's restive Borno state.

Nigerian president Muhammadu Buhari has said that the bombing happened during an operation targeting Boko Haram militants and was accidental.

A British police watchdog is investigating an incident last Saturday in Bristol in which an officer fired a stun gun at a black man who has served as a community-relations adviser for local law enforcement.

For decades, U.S. authorities have been preparing to prosecute one of the world's most feared drug traffickers, known as El Chapo.

Friday, the Justice Department announced charges against Joaquin "El Chapo" Guzman following his extradition from Mexico to the United States. He landed Thursday evening on Long Island, N.Y., and Friday afternoon entered a plea of not guilty at a federal court in Brooklyn.

As the White House transitions from Barack Obama to Donald Trump, in the social-media age that means another transition — of the @POTUS Twitter account.

At 12:01 p.m., as Trump took the oath of office, the official presidential account switched to President Trump from Obama, who was the first president to use Twitter. All tweets from Obama's term as president are archived under a new account @POTUS44.

A newly inaugurated Donald J. Trump delivered a fiercely populist and often dark address, promising to transfer power in Washington from political elites to the people and vowing to put "America first."

Surrounded by members of Congress and the Supreme Court, the nation's 45th president repeated themes from his historic and divisive campaign message, describing children in poverty, schools in crisis and streets pocked with crime and "carnage."

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