President Obama spoke about the Ukraine crisis Friday afternoon, saying, "The United States will stand with the international community in affirming that there will be costs for any military intervention in Ukraine." Mark Wilson/Getty Images hide caption

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Masses of refugees wait in line to receive food aid distributed in the Yarmouk camp on Jan. 31 in Damascus, Syria. United Nation Relief and Works Agency/Getty Images hide caption

itoggle caption United Nation Relief and Works Agency/Getty Images

Couples kiss during the Athens gay pride parade last June. Last month, activists organized a "kiss-in" during a church service run by a Greek Orthodox bishop who has threatened to excommunicate politicians supporting same-sex unions. Louisa Gouliamaki/AFP/Getty Images hide caption

itoggle caption Louisa Gouliamaki/AFP/Getty Images

On Friday, armed men took control of the international airport in the city of Simferopol, on the Crimean peninsula. Gunmen took control of another airport in Crimea, as well. David Mdzinarishvili/Reuters/Landov hide caption

itoggle caption David Mdzinarishvili/Reuters/Landov

An anti-Yanukovych protester walks past a barricade in Independence Square, the epicenter of the country's current unrest, in Kiev, Ukraine, on Wednesday. Emilio Morenatti/AP hide caption

itoggle caption Emilio Morenatti/AP

A villager holds diamonds dug out from a mine outside the village of Sam Ouandja in northeast Central African Republic in 2007. David Lewis/Reuters/Landov hide caption

itoggle caption David Lewis/Reuters/Landov