A volunteer with a self defense group looks out from a van near Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

A volunteer with a self defense group looks out from a van near Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

 Wilting flowers are seen on a barricade in Kiev's Independence Square, Ukraine, Wednesday, March 19, 2014. (AP Photo/David Azia)

Wilting flowers are seen on a barricade in Kiev's Independence Square, Ukraine, Wednesday, March 19, 2014. (AP Photo/David Azia)

 A man arranges candles at a memorial to victims of late February's clashes in Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

A man arranges candles at a memorial to victims of late February's clashes in Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

 A man, at right, clears bottles at a barricade near the entrance to the stadium of Dynamo Kyiv soccer club in Kiev, Ukraine, Wednesday, March 12, 2014. Ukraine's domestic soccer league will resume play on March 15, after a two-week postponement because of the turmoil in the country. (AP Photo/David Azia)

A man, at right, clears bottles at a barricade near the entrance to the stadium of Dynamo Kyiv soccer club in Kiev, Ukraine, Wednesday, March 12, 2014. Ukraine's domestic soccer league will resume play on March 15, after a two-week postponement because of the turmoil in the country. (AP Photo/David Azia)

 A member of the Right Sector, a Ukrainian far-right opposition group, holds a shield as he stands guard outside a building which is occupied by the movement near Kiev's Independence Square, Ukraine, Sunday, March 9, 2014. (AP Photo/David Azia)

A member of the Right Sector, a Ukrainian far-right opposition group, holds a shield as he stands guard outside a building which is occupied by the movement near Kiev's Independence Square, Ukraine, Sunday, March 9, 2014. (AP Photo/David Azia)

 Men prop up a wooden cross during a religious service held to commemorate those killed in clashes which took place in late February near Kiev's Independence Square, Ukraine, Wednesday, March 12, 2014. (AP Photo/David Azia)

Men prop up a wooden cross during a religious service held to commemorate those killed in clashes which took place in late February near Kiev's Independence Square, Ukraine, Wednesday, March 12, 2014. (AP Photo/David Azia)

 Youths, who are members of a self defense volunteer group, play table football next to a barricade on a road leading to Kiev's Independence Square, Ukraine, Sunday, March 16, 2014. Residents of Ukraine's Crimea region are voting on Sunday in a contentious referendum on whether to split off and seek annexation by Russia. (AP Photo/David Azia)

Youths, who are members of a self defense volunteer group, play table football next to a barricade on a road leading to Kiev's Independence Square, Ukraine, Sunday, March 16, 2014. Residents of Ukraine's Crimea region are voting on Sunday in a contentious referendum on whether to split off and seek annexation by Russia. (AP Photo/David Azia)

 A woman and child pray during a religious service next to a memorial to people killed in clashes which took place in late February, near Kiev's Independence Square, Ukraine, Wednesday, March 12, 2014. (AP Photo/David Azia)

A woman and child pray during a religious service next to a memorial to people killed in clashes which took place in late February, near Kiev's Independence Square, Ukraine, Wednesday, March 12, 2014. (AP Photo/David Azia)

 A member of a self defense volunteer group is illuminated by light reflected in a nearby building as he and others line up before marching to the Parliament in Kiev, Ukraine, Monday, March 17, 2014. A referendum held in Crimea on Sunday was widely condemned by Western leaders who were planning to discuss economic sanctions to punish Russia on Monday. Ukraine's new government in Kiev called the referendum a "circus" directed at gunpoint by Moscow.(AP Photo/David Azia)

A member of a self defense volunteer group is illuminated by light reflected in a nearby building as he and others line up before marching to the Parliament in Kiev, Ukraine, Monday, March 17, 2014. A referendum held in Crimea on Sunday was widely condemned by Western leaders who were planning to discuss economic sanctions to punish Russia on Monday. Ukraine's new government in Kiev called the referendum a "circus" directed at gunpoint by Moscow.(AP Photo/David Azia)

 Ukrainian men and women sing the national anthem in Kiev's Independence Square, Ukraine, Saturday, March 8, 2014. (AP Photo/David Azia)

Ukrainian men and women sing the national anthem in Kiev's Independence Square, Ukraine, Saturday, March 8, 2014. (AP Photo/David Azia)

 Dima, a member of a volunteer self defense group, smokes a cigarette during a rainfall in Kiev's Independence Square, Ukraine, Sunday, March 16, 2014. (AP Photo/David Azia)

Dima, a member of a volunteer self defense group, smokes a cigarette during a rainfall in Kiev's Independence Square, Ukraine, Sunday, March 16, 2014. (AP Photo/David Azia)

 A young girl looks at candles arranged in the shape of a cross, part of a memorial to those who died in clashes which took place in late February, in Kiev's Independence Square, Ukraine, Saturday, March 8, 2014. (AP Photo/David Azia)

A young girl looks at candles arranged in the shape of a cross, part of a memorial to those who died in clashes which took place in late February, in Kiev's Independence Square, Ukraine, Saturday, March 8, 2014. (AP Photo/David Azia)

 A flower and a glove are placed on a post as a memorial to those who died in late February's clashes in Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

A flower and a glove are placed on a post as a memorial to those who died in late February's clashes in Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

 A volunteer with a self defense group looks out from a van near Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)
 Wilting flowers are seen on a barricade in Kiev's Independence Square, Ukraine, Wednesday, March 19, 2014. (AP Photo/David Azia)
 A man arranges candles at a memorial to victims of late February's clashes in Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)
 A man, at right, clears bottles at a barricade near the entrance to the stadium of Dynamo Kyiv soccer club in Kiev, Ukraine, Wednesday, March 12, 2014. Ukraine's domestic soccer league will resume play on March 15, after a two-week postponement because of the turmoil in the country. (AP Photo/David Azia)
 A member of the Right Sector, a Ukrainian far-right opposition group, holds a shield as he stands guard outside a building which is occupied by the movement near Kiev's Independence Square, Ukraine, Sunday, March 9, 2014. (AP Photo/David Azia)
 Men prop up a wooden cross during a religious service held to commemorate those killed in clashes which took place in late February near Kiev's Independence Square, Ukraine, Wednesday, March 12, 2014. (AP Photo/David Azia)
 Youths, who are members of a self defense volunteer group, play table football next to a barricade on a road leading to Kiev's Independence Square, Ukraine, Sunday, March 16, 2014. Residents of Ukraine's Crimea region are voting on Sunday in a contentious referendum on whether to split off and seek annexation by Russia. (AP Photo/David Azia)
 A woman and child pray during a religious service next to a memorial to people killed in clashes which took place in late February, near Kiev's Independence Square, Ukraine, Wednesday, March 12, 2014. (AP Photo/David Azia)
 A member of a self defense volunteer group is illuminated by light reflected in a nearby building as he and others line up before marching to the Parliament in Kiev, Ukraine, Monday, March 17, 2014. A referendum held in Crimea on Sunday was widely condemned by Western leaders who were planning to discuss economic sanctions to punish Russia on Monday. Ukraine's new government in Kiev called the referendum a "circus" directed at gunpoint by Moscow.(AP Photo/David Azia)
 Ukrainian men and women sing the national anthem in Kiev's Independence Square, Ukraine, Saturday, March 8, 2014. (AP Photo/David Azia)
 Dima, a member of a volunteer self defense group, smokes a cigarette during a rainfall in Kiev's Independence Square, Ukraine, Sunday, March 16, 2014. (AP Photo/David Azia)
 A young girl looks at candles arranged in the shape of a cross, part of a memorial to those who died in clashes which took place in late February, in Kiev's Independence Square, Ukraine, Saturday, March 8, 2014. (AP Photo/David Azia)
 A flower and a glove are placed on a post as a memorial to those who died in late February's clashes in Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

A volunteer with a self defense group looks out from a van near Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

Wilting flowers are seen on a barricade in Kiev's Independence Square, Ukraine, Wednesday, March 19, 2014. (AP Photo/David Azia)

A man arranges candles at a memorial to victims of late February's clashes in Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

A man, at right, clears bottles at a barricade near the entrance to the stadium of Dynamo Kyiv soccer club in Kiev, Ukraine, Wednesday, March 12, 2014. Ukraine's domestic soccer league will resume play on March 15, after a two-week postponement because of the turmoil in the country. (AP Photo/David Azia)

A member of the Right Sector, a Ukrainian far-right opposition group, holds a shield as he stands guard outside a building which is occupied by the movement near Kiev's Independence Square, Ukraine, Sunday, March 9, 2014. (AP Photo/David Azia)

Men prop up a wooden cross during a religious service held to commemorate those killed in clashes which took place in late February near Kiev's Independence Square, Ukraine, Wednesday, March 12, 2014. (AP Photo/David Azia)

Youths, who are members of a self defense volunteer group, play table football next to a barricade on a road leading to Kiev's Independence Square, Ukraine, Sunday, March 16, 2014. Residents of Ukraine's Crimea region are voting on Sunday in a contentious referendum on whether to split off and seek annexation by Russia. (AP Photo/David Azia)

A woman and child pray during a religious service next to a memorial to people killed in clashes which took place in late February, near Kiev's Independence Square, Ukraine, Wednesday, March 12, 2014. (AP Photo/David Azia)

A member of a self defense volunteer group is illuminated by light reflected in a nearby building as he and others line up before marching to the Parliament in Kiev, Ukraine, Monday, March 17, 2014. A referendum held in Crimea on Sunday was widely condemned by Western leaders who were planning to discuss economic sanctions to punish Russia on Monday. Ukraine's new government in Kiev called the referendum a "circus" directed at gunpoint by Moscow.(AP Photo/David Azia)

Ukrainian men and women sing the national anthem in Kiev's Independence Square, Ukraine, Saturday, March 8, 2014. (AP Photo/David Azia)

Dima, a member of a volunteer self defense group, smokes a cigarette during a rainfall in Kiev's Independence Square, Ukraine, Sunday, March 16, 2014. (AP Photo/David Azia)

A young girl looks at candles arranged in the shape of a cross, part of a memorial to those who died in clashes which took place in late February, in Kiev's Independence Square, Ukraine, Saturday, March 8, 2014. (AP Photo/David Azia)

A flower and a glove are placed on a post as a memorial to those who died in late February's clashes in Kiev's Independence Square, Ukraine, Wednesday, March 5, 2014. (AP Photo/David Azia)

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