The U.S. intelligence community on Friday accused Russia of interfering in the 2016 election in its strongest terms yet, alleging Russian President Vladimir Putin ordered a campaign to undermine faith in the electoral process and developed a "clear preference" for President-elect Donald Trump.

The conclusions came in an unclassified report released Friday by the Office of the Director of National Intelligence that goes into the most detail yet on what it deems Russia's motives for meddling in the U.S. election. It excludes some information delivered in a classified report. President Barack Obama previously called for a full review and report on Russia's role in the election.