The US Justice Department ordered the seizure Monday of two aircraft owned by Russian oligarch Roman Abramovich, saying they had been used in violation of sanctions on Russia imposed over its invasion of Ukraine. The department said in court filings that the two aircraft, a Boeing 787-8 Dreamliner and Gulfstream G650ER executive jet, had been flown into Russian territory in earlier this year in violation of US export controls set for US-made aircraft on March 2. The move, announced by the Justice department’s New York division, took aim at one of the wealthiest Russian billionaires, who has al…