Robert O’Brien’s comments come after conflicting accounts emerged from a recent closed-door briefing by intelligence officials, who spoke to lawmakers about Russian interference in the 2020 campaign.

The two were born in the 1990s to parents who were later arrested in the United States for conspiring to act as secret agents on behalf of a Russian intelligence agency.

The West has accused the GRU of running a global hacking campaign, targeting institutions from sports anti-doping bodies to a nuclear power company and the chemical weapons watchdog.