Voters in the Kremlin-backed regions of eastern Ukraine are voting Sunday for local government leaders.

The elections have been denounced by Kyiv, Washington and the European Union.

Federica Mogherini, the European Union foreign policy chief, said her group found the polls “illegal and illegitimate and will not recognize them.”

“These particular elections are a mockery,” said Kurt Volker, the U.S. special envoy to Ukraine.

Russia annexed Crimea in 2014 and has supported the insurgency in eastern Ukraine.

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