Effective in August 2012, a new law on regional languages entitles any local language spoken by at least a 10% minority be declared official within that area. On 23 February 2014, following the 2014 Ukrainian revolution, a bill was passed by the parliament which would have abolished the law on regional languages, making Ukrainian the sole state language at all levels. This bill was blocked by acting President Turchynov, until a replacement bill is ready. The 2012 law was ruled unconstitutional and was struck down by the Constitutional Court of Ukraine in 2018, 4 years after the Euromaidan.