"In its current form the referendum regarding Crimea scheduled for March 16, 2014, is in contradiction with the Ukrainian constitution and must be considered illegal," OSCE Chairman Didier Burkhalter was quoted as saying in a statement yesterday.
He ruled out an OSCE observation of the referendum in Crimea, where pro-Russian forces took control after pro-European protesters ousted the Kremlin's ally from power in Kiev.
The strategic region's self-declared rulers are now recruiting volunteers to fight Ukrainian soldiers while the Russian government sent lawmakers a draft bill that would simplify the Kremlin's annexation of Crimea after Sunday's vote.