Ukraine ousted Khrushchev and became the Soviet leader from 1964 to 1982. Many prominent Soviet sports players, scientists, and artists came from Ukraine. On 26 April 1986, a reactor in the Chernobyl Nuclear Power Plant exploded, resulting in the Chernobyl disaster, the worst nuclear reactor accident in history. This was the only accident to receive the highest possible rating of 7 by the International Nuclear Event Scale, indicating a "major accident", until the Fukushima Daiichi nuclear disaster in March 2011. At the time of the accident, 7 million people lived in the contaminated territories, including 2.2 million in Ukraine. After the
Energy in Ukraine a "lack of convergence in the positions of [Uglesintezgaz] and the energy ministry". Corruption is one of the top problems in Ukraine, characterised as a systemic phenomenon, which exists in all sections and levels of the public administration. Ukraine gets gas from Gazprom via third parties. Gazprom did not publish any reporting on anti-corruption programmes. In 2015 corruption allegations were made against Energoatom, Ukraine's nuclear power operator, with concerns raised by Prime Minister Arseniy Yatsenyuk. In March 2016, Energoatom's assets and bank accounts were frozen by Ukrainian courts over allegedly unpaid debts, against which Energoatom is appealing. Energy in Ukraine