A protester throws tires onto a fire during a clash with police in central Kiev, Ukraine, Thursday, Jan. 23, 2014. Thick black smoke from burning tires engulfed parts of downtown Kiev, as an ultimatum... more 
A protester throws tires onto a fire during a clash with police in central Kiev, Ukraine, Thursday, Jan. 23, 2014. Thick black smoke from burning tires engulfed parts of downtown Kiev, 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 on Thursday. (AP Photo/Sergei Grits) less 
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Associated Press | Photo By AP Photo/Sergei Grits
Thu, Jan 23, 2014 12:00 PM EST