Both of these articles are from sources that have pledged their honor to keep secrets. Not to mention that they would be subject to criminal prosecution. So from the get-go the sources are suspect. Also, neither article says they have copies or transcripts to verify that these allegations are true. The source that says a highly placed official is a person of interest, even if true, will not touch President Trump. However, if President Trump did say to the Russians that he fired Comey to slow down the investigation, then that would be obstruction and a very serious matter. I truly doubt that Trump is so stupid that he would have said such a thing. As a businessman he is used to making sure he does not paint himself into a corner he can't get out of. That's just business 101. Always leave an exit. So, until they have verified hard copies of the Comey notes, and the Russian conversation, what we have is hearsay, and that is a no starter in any court.