Retired Army Lt. Col. Alexander Vindman, who served on the National Security Council and emerged as a star witness against then-President Donald Trump during the 2019 Ukraine impeachment, is suing Donald Trump Jr., Rudy Giuliani and former Trump White House staffers, alleging they conspired against him. Vindman, in a new lawsuit filed in DC District Court, said Trump's family, his lawyers, right-wing media and others in the White House tried to intimidate and retaliate against him because he was willing to testify against the President, calling out Trump's entreaties of Ukraine for his personal political gain. He bluntly called the...