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
Nuclear weapons and Ukraine The study argues that the push for Ukrainian independence was with a view to make it a nonnuclear state. The United States would also not have made Ukraine an exception when it came to the denuclearization of other post-Soviet states such as Belarus and Kazakhstan. The deterrent value of the nuclear weapons in Ukraine was also questionable, as Ukraine would have had to spend 12 to 18 months to establish full operational control over the nuclear arsenal left by the Russians. The ICBMs also had a range of 5.000-10.000 km (initially targeting the United States), which meant that they could