Mykhailo Koval, deputy secretary of the National Security and Defense Council and former Defense Minister, said about it, Censor.NET reports, citing Interfax-Ukraine.
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"Immediately after the ceasefire ended and the law enforcement operation entered an active phase, the entire border was shut to prevent attempts to transport heavy weapons into Ukraine across the border. Even in the Luhansk region the border is under full control of the armed forces and border guards," Koval said in an interview with Channel 5, broadcast on Monday evening.
Koval also said that the airspace of Ukraine has not been violated after July 4, when two Russian helicopters crossed the air border from the Russian side. After the incident a warning was issued that state readiness to strike objects, intruding into the territory of Ukraine.