(01 of21)
Open Image ModalA member of the Ukrainian special forces takes position at an abandoned roadblock in the eastern Ukrainian city of Slavyansk on April 24, 2014. Ukraine's military launched an assault on the flashpoint rebel-held town of Slavyansk, sending in armoured vehicles and a helicopter, AFP journalists in the town reported. Several armoured personnel carriers drove past an abandoned rebel roadblock in flames to take up position at the entry to the town. AFP PHOTO/KIRILL KUDRYAVTSEV (Photo credit should read KIRILL KUDRYAVTSEV/AFP/Getty Images) (credit:Getty Images)
(02 of21)
Open Image ModalUkrainian special forces take position at an abandoned roadblock in the eastern Ukrainian city of Slavyansk on April 24, 2014. Ukraine's military launched an assault on the flashpoint rebel-held town of Slavyansk, sending in armoured vehicles and a helicopter, AFP journalists in the town reported. Several armoured personnel carriers drove past an abandoned rebel roadblock in flames to take up position at the entry to the town. AFP PHOTO/KIRILL KUDRYAVTSEV (Photo credit should read KIRILL KUDRYAVTSEV/AFP/Getty Images) (credit:Getty Images)
(03 of21)
Open Image ModalUkrainian special forces take position at an abandoned roadblock in the eastern Ukrainian city of Slavyansk on April 24, 2014. Ukraine's military launched an assault on the flashpoint rebel-held town of Slavyansk, sending in armoured vehicles and a helicopter, AFP journalists in the town reported. Several armoured personnel carriers drove past an abandoned rebel roadblock in flames to take up position at the entry to the town. AFP PHOTO/KIRILL KUDRYAVTSEV (Photo credit should read KIRILL KUDRYAVTSEV/AFP/Getty Images) (credit:Getty Images)
(04 of21)
Open Image ModalUkrainian special forces take position in the eastern Ukrainian city of Slavyansk on April 24, 2014. Ukraine's military launched an assault on the flashpoint rebel-held town of Slavyansk, sending in armoured vehicles and a helicopter, AFP journalists in the town reported. Several armoured personnel carriers drove past an abandoned rebel roadblock in flames to take up position at the entry to the town. AFP PHOTO/KIRILL KUDRYAVTSEV (Photo credit should read KIRILL KUDRYAVTSEV/AFP/Getty Images) (credit:Getty Images)
(05 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A cyclist rides through a burning Russian separatist roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the separatists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(06 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A pro-Russian activist guards a burning roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the activists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(07 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: Pro-Russian activists guard a smoldering roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the activists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(08 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A pro-Russian activists guards a smoldering roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the activists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(09 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A pro-Russian activists guards a burning roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the activists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(10 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A pro-Russian activists guards a smoldering roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the activists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(11 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A pro-Russian activists guards a burning roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the activists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(12 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A pro-Russian activists guards a smoldering roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the activists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(13 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A pro-Russian militant takes up a defensive position at a smoldering roadblock outside the village of Khrestyshche on April 24, 2014 near Slovyansk, Ukraine. The roadblock was reportedly set on fire by the separatists when it was approached by a Ukrainian army unit. Today Ukrainian forces began to establish new roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(14 of21)
Open Image ModalA pro-Russian activist gestures next to a barricade at a checkpoint outside the eastern Ukrainian city of Slavyansk on April 24, 2014 after Ukrainian troops left. Up to five insurgents were killed when Ukraine's military on Thursday launched an assault on the flashpoint rebel-held town of Slavyansk, sending in armoured vehicles and a helicopter, AFP journalists in the town reported. AFP PHOTO/ GENYA SAVILOV (Photo credit should read GENYA SAVILOV/AFP/Getty Images) (credit:Getty Images)
(15 of21)
Open Image ModalArmed pro-Russian activists stand guard next to a barricade at a checkpoint outside the eastern Ukrainian city of Slavyansk on April 24, 2014 after Ukrainian troops left. Up to five insurgents were killed when Ukraine's military on Thursday launched an assault on the flashpoint rebel-held town of Slavyansk, sending in armoured vehicles and a helicopter, AFP journalists in the town reported. AFP PHOTO/ GENYA SAVILOV (Photo credit should read GENYA SAVILOV/AFP/Getty Images) (credit:Getty Images)
(16 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: Ukrainian soldiers guard a roadblock along the highway on April 24, 2014 near Slovyansk, Ukraine. Today Ukrainian forces began to establish roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes with the Ukrainian army in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(17 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: Ukrainian soldiers guard a roadblock along the highway on April 24, 2014 near Slovyansk, Ukraine. Today Ukrainian forces began to establish roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes with the Ukrainian army in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(18 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: Ukrainian soldiers guard a roadblock along the highway on April 24, 2014 near Slovyansk, Ukraine. Today Ukrainian forces began to establish roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes with the Ukrainian army in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(19 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: Ukrainian soldiers guard a roadblock along the highway on April 24, 2014 near Slovyansk, Ukraine. Today Ukrainian forces began to establish roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes with the Ukrainian army in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(20 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A Ukrainian soldier searches a car while he guards a roadblock along the highway on April 24, 2014 near Slovyansk, Ukraine. Today Ukrainian forces began to establish roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes with the Ukrainian army in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)
(21 of21)
Open Image ModalSLOVYANSK, UKRAINE - APRIL 24: A Ukrainian soldier guards a roadblock along the highway on April 24, 2014 near Slovyansk, Ukraine. Today Ukrainian forces began to establish roadblocks around the cities of Slovansk and Donetsk, both strongholds of pro-Russian separatists in Eastern Ukraine. The Ukraine government claims 5 separatists were killed during skirmishes with the Ukrainian army in Slovyansk today. (Photo by Scott Olson/Getty Images) (credit:Getty Images)