Former U.S. official worried Russia could have blackmailed then-Trump aide Flynn

White House National Security Advisor Michael Flynn walks down the White House colonnade on the way to Japanese Prime Minister Shinzo Abe and President Trump's joint news conference at the White House. REUTERS/Jim Bourg

WASHINGTON (Reuters) - A former U.S. Department of Justice official testified on Monday that she had two meetings and one telephone call with White House officials about Michael Flynn when he was President Donald Trump's national security adviser. Describing reports that Flynn had misrepresented his contacts with Sergey Kislyak, Russia's ambassador to the United States, former acting Attorney General Sally Yates said in a Senate hearing she was concerned that "the national security adviser essentially could be blackmailed by the Russians." (Reporting by Patricia Zengerle; Editing by Peter Cooney)