Best pictures of the day

Free Syrian Army fighters take positions behind a damaged car as they fire their weapons during an offensive against forces loyal to Syria's President Bashar al-Assad in Aleppo's Salaheddine neighbourhood.

U.S. Senate Majority Leader Harry Reid (D-NV) gathers with other Democratic Party senate members and Washington D.C. Mayor Vincent Gray (L) on the steps of the U.S. Capitol in Washington.

A man looks down after feeding pigeons from his window in central Madrid.

Aaron Hernandez, former player for the NFL's New England Patriots football team, stands in handcuffs during a court appearance at the Bristol County Superior Court in Fall River, Massachusetts.

A dog looks at the sea as people rest on the beach outside of the Olympic Park in the Alder district of Sochi.

A member of the Saudi security forces stands guard during a military parade in preparation for the annual haj pilgrimage in the holy city of Mecca.

Labourers brush their teeth with neem twigs on the banks of the Ganges river in Kolkata.

Red Bull Formula One driver Sebastian Vettel of Germany signs his autograph for a fan after speaking at an event at Nissan Motor Co's global headquarters in Yokohama, south of Tokyo.

U.S. President Barack Obama (L) applauds after announcing his nomination of Janet Yellen (R) to head the Federal Reserve at the White House in Washington.

Martin Karplus speaks on the phone after winning the 2013 Nobel Prize for chemistry, at his home in Cambridge, Massachusetts.