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KIEV, UKRAINE - FEBRUARY 21: L-R: German Foreign Minister Frank-Walter Steinmeier, Vitali Klitschko, leader of Ukraine's UDAR opposition party, leader of All-Ukrainian Union 'Svoboda' Olej Tjahnybok, Ukrainian President Viktor Yanukovych, leader of All-Ukrainian Union 'Fatherland' Arseni Jazenjuk and Polish Foreign Minister Radoslaw Sikorski after the signing of the Agreement in the Presidential Palace on February 21, 2014 in Kiev, Ukraine. Steinmeier and his counterparts from France and Poland meet with President Yanukovych and other government officials and hold separate talks with the opposition. The three ministers will then fly to Brussels for a crisis meeting with EU foreign policy chief Catherine Ashton and other EU foreign ministers. (Photo by Thomas Trutschel/Photothek via Getty Images)

KIEV, UKRAINE - FEBRUARY 21: L-R: German Foreign Minister Frank-Walter Steinmeier, Vitali Klitschko, leader of Ukraine's UDAR opposition party,  leader of All-Ukrainian Union 'Svoboda' Olej Tjahnybok, Ukrainian President Viktor Yanukovych,  leader of All-Ukrainian Union 'Fatherland' Arseni Jazenjuk and Polish Foreign Minister Radoslaw Sikorski after the signing of the Agreement in the Presidential Palace on February 21, 2014 in Kiev, Ukraine. Steinmeier and his counterparts from France and Poland meet with President Yanukovych and other government officials and hold separate talks with the opposition. The three ministers will then fly to Brussels for a crisis meeting with EU foreign policy chief Catherine Ashton and other EU foreign ministers.  (Photo by Thomas Trutschel/Photothek via Getty Images)