This image taken from AP video shows Ukrainian President, Viktor Yanukovych, as he signs an agreement with opposition leaders in Kiev, Ukraine, Friday, Feb. 21, 2014. Ukraine's president and opposition leaders signed an agreement on Friday to try to end the country's political crisis. The deal provides for early elections and a new government. It could be a breakthrough in a months-long crisis over Ukraine's future and identity that worsened sharply this week and left scores dead in the worst violence in Ukraine's history as an independent nation. (AP Photo/AP video)

(From L) German Foreign Minister Frank-Walter Steinmeier, the head of the Udar (Punch) party Vitalii Klitschko, the head of the Svoboda party Oleh Tyagnybok, Ukrainian President Viktor Yanukovych, the head of Batkivcshchyna party Arseniy Yatsenyuk and Polish Foreign Minister Radoslaw Sikorski (out of the picture) stand for an homage to people who died during clashes in Kiev before signing an agreement on February 21, 2014.Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

(From L) The head of the Udar (Punch) party Vitalii Klitschko, the head of the Svoboda party Oleh Tyagnybok, Ukrainian President Viktor Yanukovych, the head of Batkivcshchyna party Arseniy Yatsenyuk and Polish Foreign Minister Radoslaw Sikorski (out of the picture) stand for an homage to people who died during clashes in Kiev before signing an agreement on February 21, 2014.Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

(From L) The head of the Svoboda party Oleh Tyagnybok, Ukrainian President Viktor Yanukovych, and the head of Batkivcshchyna party Arseniy Yatsenyuk stand for an homage to people who died during clashes in Kiev before signing an agreement on February 21, 2014.Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

(From L) German Foreign Minister Frank-Walter Steinmeier, the head of the Udar (Punch) party Vitalii Klitschko, the head of the Svoboda party Oleh Tyagnybok, Ukrainian President Viktor Yanukovych, the head of Batkivcshchyna party Arseniy Yatsenyuk and Polish Foreign Minister Radoslaw Sikorski (out of the picture) sign an agreement on February 21, 2014 in Kiev.Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

(From L) German Foreign Minister Frank-Walter Steinmeier, the head of the Udar (Punch) party Vitalii Klitschko, the head of the Svoboda party Oleh Tyagnybok, Ukrainian President Viktor Yanukovych, the head of Batkivcshchyna party Arseniy Yatsenyuk and Polish Foreign Minister Radoslaw Sikorski sign an agreement on February 21, 2014 in Kiev.Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

Ukrainian President Viktor Yanukovych signs an agreement with the opposition on February 21, 2014. Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

(From L) The head of the Udar (Punch) party Vitalii Klitschko, the head of the Svoboda party Oleh Tyagnybok, Ukrainian President Viktor Yanukovych, and the head of Batkivcshchyna party Arseniy Yatsenyuk sign an agreement on February 21, 2014 in Kiev.Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

Ukrainian President Viktor Yanukovych signs an agreement with the opposition on February 21, 2014. Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

The head of the Svoboda party Oleh Tyagnybok (L) looks at Ukrainian President Viktor Yanukovych as he signs an agreement on February 21, 2014. Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

German Minister for Foreign Affairs Frank-Walter Steinmeier (L) and the head of the Udar (Punch) party Vitalii Klitschko sign an agreement on February 21, 2014. Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY

German Minister for Foreign Affairs Frank-Walter Steinmeier (L) and the head of the Udar (Punch) party Vitalii Klitschko shake hands after signing an agreement on February 21, 2014. Ukraine's leader and opposition on Friday signed a deal to end the splintered country's worst crisis since independence after three days of carnage left nearly 100 protesters dead and the heart of Kiev resembling a war zone. President Viktor Yanukovych's dramatic decision to hold early elections and form a new unity government was met with caution by the tens of thousands gathered on central Kiev's main square for a protest that began exactly three months earlier. AFP PHOTO/ SERGEI SUPINSKY