The Trump-Russia saga in 200 words
It's the story that has dominated Donald Trump's presidency, but it's complicated. Let's take a step back.
US intelligence agencies believe Russia tried to sway the election in favour of Trump and now there are several investigations looking into whether anyone from his campaign helped.
Nothing to show collusion but more and more contacts between his staff and Russia have emerged. Several of these communications were not initially disclosed. The president himself has rejected the allegation that anyone around him colluded with Russia and says the "real" story is leaks.
Trump fired FBI Director James Comey, who was leading one of the investigations. Then he told Russian officials in a White House meeting that sacking him helped to ease "great pressure" he felt over Russia. Comey is expected to testify publicly on Thursday that the president asked him to stop looking into the actions of one his aides, Michael Flynn.
Who is Flynn?
He was the national security adviser who had to quit because he misled the White House about his contacts with Russia. Another person who is being looked at for alleged Russia links is Trump's son-in-law and adviser, Jared Kushner.