“In the last couple of weeks and months, the border crossing by Russian citizens holding Schengen visas have dramatically increased,” he told a press conference in Lithuania.
“Can you actually cancel the whole Schengen principles? This is, at the moment, still unclear,” he said.
Ukraine considering shutting down Zaporizhzhia nuclear plant
Mr Korikov said the facility was supplying its own electricity needs, but that backup diesel generators would have to be fired up if it remained disconnected, though he gave no time frame for that eventuality.
Shutting down the vast, six-reactor nuclear plant would pile further strain on Ukraine which is already bracing for a winter of energy shortages as the war rages on in its east and south.