Russia's Wednesday flyover appeared to send a message that business was running as usual despite the Ukrainian attacks.
The comments come amid discussions for a nuclear deal with Tehran.
"We must first stop killing people," Shlosber said at the time. "If we achieve peace, we will regain freedom."
A search and rescue plane had been sent to locate the aircraft that was performing forestry aerial reconnaissance, Rosaviatsia said.
Iranian state media claimed that at least four of the new power plants would be in Bushehr, where Russia helped Iran construct their first nuclear reactor.
Russia and Ukraine began a large-scale POW exchange on Monday, swapping young and severely wounded soldiers, following a June 2 agreement.
Zelensky vowed to continue prisoner swaps, warning Russia’s delays harm peace efforts. Russia pushes into central Ukraine amid rising tensions over the dispute.
The Base currently operates primarily out of Ukraine after a years-long FBI counter-terrorism operation dissolved the group's US branch.
In a statement, Kremlin spokesperson Dimitry Peskov said that Moscow was ready to use its close relations with Tehran to help in nuclear deal negotiations.
Britain will build at least six new munitions plants, procure up to 7,000 British-made long-range weapons, and launch new communication systems for the battlefield.