Police officers help up an injured pro Ukraine protestor during clashes with pro Russia protestors following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

A pro Russia protestor, right, kicks a pro Ukraine protestor during clashes between the two sides following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

Pro Russia protestors, left, fight with pro Ukraine protestors during clashes between the two sides following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

Pro Ukraine protestors, some of them injured, are shielded by police at right during clashes with pro Russia protestors following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

Pro Ukraine protestors are shielded by police, at left, during clashes with pro Russia protestors following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

Pro Ukraine protestors are shielded by police, visible at left, during clashes with pro Russia protestors following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

Pro Ukraine protestors are shielded by police, at right, during clashes with pro Russia protestors following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

A pro Ukraine protestor reacts as an egg is thrown by a pro Russia protestor during clashes following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

A pro Ukraine protestor reacts as an egg is thrown by a pro Russia protestor during clashes following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

Pro Ukraine protestors hold a banner in the colors of the national flag as missiles thrown by pro Russia protestors cover the floor during clashes following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

Pro Russia protestors throw eggs at pro Ukrainian protestors during clashes which started after a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

A pro Russia protestor throws a stone at a police bus in which pro Ukraine protestors are sheltering during clashes following a rally in Donetsk, Ukraine, Thursday, March 13, 2014. Bloody clashes erupted between pro Russia and pro Ukraine protestors in the eastern city of Donetsk on Thursday evening, leaving dozens injured as police struggled to prevent the violence. (AP Photo/Sergei Grits)

Pro-Russian supporters clash with pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Policemen stand between pro-Russian and pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Policemen stand between pro-Russian and pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Pro-Russian supporters clash with pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Pro-Russian supporters clash with pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Policemen walk between pro-Russian and pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Pro-Russian supporters clash with pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Ukraine's Prime Minster Arseniy Yatsenyuk (C) arrives to attend an UN Security Council meeting at the United Nations headquarters in New York, March 13, 2014. AFP PHOTO/Emmanuel Dunand

Pro-Russian supporters clash with pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Policemen grab a man during clashes between pro-Russian and pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

A pro-Ukrainian protester throws back a smoke bomb during clashes between pro-Russian and pro-Ukrainian activists at a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

A pro-Ukrainian protester throws back a smoke bomb during clashes between pro-Russian and pro-Ukrainian activists at a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Pro-Russian supporters clash with pro-Ukrainian activists during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

A line of policemen stand in front of a bus full of pro-Ukrainian activists as pro-Russian supporters (L) confront them during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Pro-Russian activists hold Russian flags during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Pro-Ukrainian supporters hold a giant Ukrainian flag as pro-Russian activists throw tear gas on them during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY

Pro-Russian activists hold Russian flags during a rally in the eastern Ukrainian city of Donetsk on March 13, 2014. The UN Security Council began meeting to discuss Ukraine in the presence of the country's interim Prime Minister Arseniy Yatsenyuk, who is to address the session. The flaring crisis between two of the former Soviet Union's biggest states was sparked by the ouster last month of a pro-Kremlin regime that in November rejected an historic EU deal that would have pulled Kiev out of the Kremlin's orbit for the first time. AFP PHOTO/ ALEXANDER KHUDOTEPLY