Ukrainian forces have carried out overnight attacks on military and energy-related facilities in several Russian regions.
The prosecutor sought an 18-year sentence for Mr Nikolayev. According to Zona Solidarnosti, he pleaded guilty but did not express any regret.
Gazprom halted gas supplies to Germany via the Nord Stream 1 pipeline due to maintenance at the beginning of September and then refused to resume delivery.
The president said that Ukraine was attacked during the night and throughout the morning.
A bank spokesperson told the Tasnim news agency that the institution was the target of a denial-of-service (DDoS) attack.
Head of Ukraine’s railways said “Russian forces are systematically destroying the infrastructure of our railways.”
