[caption id="attachment_55245452" align="aligncenter" width="620"] Logos for the microblogging site Twitter, displayed on the Internet on September…

[caption id="attachment_55245423" align="alignnone" width="620"] People react after the announcement of the 2020 Olympic Games host city on September…

[caption id="attachment_55245417" align="alignnone" width="620"] Egyptian activists gather during a rally on Pennsylvania Avenue outside the White…

[caption id="attachment_55245431" align="alignnone" width="620"]Barbed wire between Bab Al-Tabbaneh and Jebel Mohsen on Syria Street, Tripoli,…

[caption id="attachment_55245395" align="alignnone" width="620"] Wine horn with gazelle protome, Sasanian period, 4th century, silver gilt. (courtesy…

[caption id="attachment_55245402" align="alignnone" width="620"] U.S. Secretary of State John Kerry speaks as Prime Minister of Turkey Recep Tayyip…

[caption id="attachment_55245409" align="alignnone" width="620"] Libya women wave their new flag during celebrations in the streets of Tripoli …

[caption id="attachment_55245374" align="aligncenter" width="620"] US President Barack Obama walks to the podium before addressing the nation in a…

[caption id="attachment_55245366" align="aligncenter" width="620"] Yemen's President Hadi stands amidst officials during the opening of a national…

[caption id="attachment_55245354" align="alignnone" width="620"] A United Nations (UN) arms expert collects samples on August 29, 2013, as they…