Yes, Ake, I trust the U.S. intelligence services. Yes, there will be those who will dig up "alternative facts" and conspiracy theories but I think there is an overwhelming culture of integrity in the U.S. intelligence services - a drive to provide accurate information even if it isn't what the politicians want to hear (and these agencies are going to be very unpopular with the current administration). The political appointees at the tops of agencies can be swayed, but rank-and-file government workers in general remain professional and honest.
I worked for the Army Security Agency (part of NSA) for three years, and then spent 30 years in on-and-off contact with security agencies. They're good folks.
But the Trump Administration distorts the truth at every turn of the path, even when there's no reason for distortion.
-Joe-