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
Mayor of Kiev mayor of Kiev Leonid Chernovetsky of the office of Head of Kiev City Administration, while still preserving the post of mayor. This led to Chernovetsky being deprived of any official decision-making role and most power in the capital was handed over to the Head of Kiev City Administration. At that time that was Oleksandr Popov who was appointed by President Viktor Yanukovych on 16 November 2010. Before these amendments, the elected mayor of the Kiev City Council was automatically appointed also as head of the Kiev City City Administration. Chernovetsky was not seen in Kiev for several months after Popov's