Protesters use a large slingshot to hurl rocks at police in central Kiev, Ukraine, Thursday, Jan. 23, 2014. Thick black smoke from burning tires engulfed the downtown Ukrainian capital as an ultimatum... more 
Protesters use a large slingshot to hurl rocks at police in central Kiev, Ukraine, Thursday, Jan. 23, 2014. Thick black smoke from burning tires engulfed the downtown Ukrainian capital as an ultimatum issued by the opposition to the president to call early election or face street rage was set to expire with no sign of a compromise. (AP Photo/Darko Vojinovic) less 
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Associated Press | Photo By AP Photo/Darko Vojinovic
Thu, Jan 23, 2014 12:00 PM EST