The investigation into whether Trump colluded with Russia to help him win the election - spoiler alert: he didn't - is for me very boring and not at all important. What is interesting is that the FBI relied on uncorroborated information in order to investigate someone in the Trump campaign. They did so because they, quite reasonably, had faith in Christopher Steele, the supposedly retired M16 man who produced the information.
The Guardian in April 2017 said:
The Guardian in April 2017 said:

