Meseret Defar shocks Tirunesh Dibaba with a stunning last lap to reclaim the Olympic 5,000m title she won in 2004.

Great Britain finish fourth as the Bahamas beat the United States to take gold in the men's 4x400m relay.

A top Libyan defence official is shot dead in the eastern city of Benghazi, in the latest of a series of attacks on Gaddafi-era security officials.

US nuns who have come under fire from the Vatican say they will hold further talks with church leaders, but will not "compromise their mission".

Paraguayan thrash metal band Kuazar say their pioneering use of Guarani - along with Spanish, their country's official language - perfectly matches the strength of their hard rock sounds.

US Secretary of State Hillary Clinton arrives in Turkey for talks on the Syrian crisis as thousands of refugees continue to flee war-torn areas.

Two former US border guards are convicted of smuggling in hundreds of immigrants across the border from Mexico, in a high-profile corruption case.

US Republican presidential candidate Mitt Romney will announce his running mate for the November election with Paul Ryan tipped as his choice.