President Donald Trump rehashed longstanding grievances over the Russia investigation that shadowed much of his first term, lashing out Tuesday following a new report from his intelligence director aimed at casting doubt on long-established findings about Moscow's interference in the 2016 election.

Director of National Intelligence Tulsi Gabbard this month declassified material that she claimed proved a “treasonous conspiracy” by the Obama administration in 2016 to politicize U.S. intelligence in service of casting doubt on the legitimacy of Donald Trump’s election victory.