OSCE observers received an invitation to a referendum in Crimea, but it wasn't in the rules, upheld by the organization. About This told reporters on Tuesday, the OSCE Secretary General Lamberto Zannier. Sevastopol and the Crimea became the Russian regions according to the results of the referendum on 16 March 2014, in which the overwhelming majority of voters voted for secession from Ukraine and reunification with Russia. "We have accepted the invitation to a referendum in Crimea, but it was done improperly. Most importantly because We were not invited by the Ukrainian authorities, " he said. OSCE Secretary General also emphasized that Authorized organizations " were not invited to observe preceding the vote campaign, as We always do ". review Zannier was risky to confer legitimacy on the process which We have not seen from the beginning "." This is not something We do often, " explained the Secretary General of the OSCE.