2014 pro-Russian unrest in Ukraine Kiev and Mariupol, were struck by bombings that targeted pro-Ukrainian unity organizations. To maintain control over southeastern territories Ukraine's government started "antiterrorist operation" (ATO) sending armed forces to suppress separatists. Armed conflict between Ukraine's government forces and pro-Russian rebels is known as War in Donbass. Ukraine became gripped by unrest when President Viktor Yanukovych refused to sign an association agreement with the European Union on 21 November 2013. An organized political movement known as 'Euromaidan' demanded closer ties with the European Union, and the ousting of Yanukovych. This movement was ultimately successful, culminating in the February 2014 revolution, which removed
Timeline of the Euromaidan as a result of mass disturbances". On Maidan Nezalezhnosti, Klitschko announced that he and the opposition would be soon voting on the impeachment of Viktor Yanukovych in parliament; the bill of which was registered in the previous session. In Parliament, Speaker Volodymyr Rybak submitted his resignation, citing alleged illness. Yanukovych's whereabouts were unknown despite media reports he had flown to Kharkiv. Oleksandr Turchynov stated that in fact most of the ministers had disappeared as well as Interior Minister Vitaly Zakharchenko (who is reported to have fled to Belarus) and President Viktor Yanukovych, "The only one legitimate body left is the