The referendum in Crimea took place as a result of a coup d’état in Ukraine in February 2014.
Recurring pro-Kremlin narrative claiming that Euromaidan was a coup d’état.
Maidan or Euromaidan, the demonstrations which began in November 2013 in Kyiv and finished in February 2014, was not provoked from outside but was a result of the Ukrainian people's frustration with former President Yanukovych’s sudden departure from the EU-Ukraine Association Agreement. More cases on this topic here.
In order to justify the illegal annexation of Crimea and the reunification with Russia, Moscow claimed that Euromaidan was a coup d’état. In 2014, a particular political context enabled the mobilisation of latent pro-Russia sentiment in Crimea after the occupation by the “green men” had already occurred, NOT vice versa. Euromaidan created a pretext for Putin to enact a pre-prepared contingency plan.
The European Union does not recognise Crimea's illegal annexation and continues to condemn it as a violation of international law. EU sanctions continue to be in place against Russia as a consequence for the annexation. For the EU statement on the fifth anniversary of Crimea annexation see here.
For other disinformation cases about Crimea see here.