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"Russia is, and has been, part of that leverage in the past," U.S. State Department Spokesman John Kirby says.

Travel writer, Leah van der Kooy, shares her tips for feeling your best on the road.

Three months after escaping Boko Haram, Amina Ali speaks to CNN's Stephanie Busari about her life after her abduction.

CNN's Nick Paton Walsh sees firsthand what Rio's homicide detectives have to deal with when trying to solve murders in this Olympic city.

Donald Trump enjoyed a post convention bounce in the polls. But after a series of controversial statements, things have changed less than a month later.

Australia will close its controversial Manus Island detention center, the Papua New Guinea government said. CNN's Andrew Stevens reports.

Green Party presidential nominee Jill Stein says it's time for America to fix a system that is working against the younger generation.

"The Hunt" follows Jorge Landeros, a suspect in the murder of his friend professor Sue Marcum, whose body was found battered at the bottom of her basement stairs. Tune in Sunday at 9 p.m. ET/PT.

An infant kidnapped from a hospital when she was three days old has been found. CNN's David McKenzie has her remarkable story.

Bill O'Reilly hosts the number-one show on cable news. He's also a best-selling author and has a degree from Harvard.

CNN's Isa Soares interviews Martin Williams, from the Environmental Research Group at King's College London.

Everyone who knows Simone Biles knows that she loves Zac Efron, so it was a huge deal when the actor flew to Rio to surprise her at the Olympics.

Escaped Chibok girl Amina Ali Nkeki says she is still thinking about her Boko Haram fighter husband, three months after escaping the militants' camp.

Apple opened a retail location inside Oculus, the mall at the World Trade Center transportation hub.

A look back at the most memorable moments from Britney Spears' Video Music Awards performances.

Gold medalist Giles Scott has helped Great Britain hold onto second place in the Olympic medal count. CNN's Amanda David reports.

Rio police have questions about U.S. Olympic swimmer Ryan Lochte's robbery report. CNN's Nick Paton Walsh reports.

Google released Duo, an app that lets iOS users video chat with Android users. The app aims to be the WhatsApp of video calling. CNNMoney's Samuel Burke and Cristina Alesci gave it a shot.

A fast moving California wildfire has forced 82,000 residents to evacuate. The massive fire, which is being called Blue Cut, prompted Gov. Jerry Brown to declare a state of emergency in the area.

Google released Duo, an app that lets iOS users video chat with Android users. CNNMoney's Samuel Burke and Cristina Alesci gave it a shot.