Grand jury subpoenas ex-CIA chief Brennan, ex-FBI officials linked to Trump-Russia probe
A federal grand jury has subpoenaed three former CIA and FBI officials who were involved in the federal government’s investigations into alleged Russian meddling to assist President Trump’s 2016 campaign, a source familiar with the matter told CBS News. The subpoenas went out to former CIA Director John Brennan, former FBI counterintelligence official Peter Strzok