This Russia scandal will go on as long as Trump is president, however so long that may be.  I don't know how much it will damage him, as this was definitely making news before the election and failed ( a few paragraphs down, the article states the intelligence officials have seen no evidence of collusion or cooperation).  My guess is that it will provide fodder for Trump's opponents though the caravan will go on.  Or circus train, if you prefer.

 (Incidentally, FOR those thinking impeachment, you need 2/3 of the Senate for a Conviction to get a President out.  Not likely,  IMHO. Think of the Iran-Contra Affair rather than Watergate.  If Trump is unpopular in three years, IMHO he'll simply not run again quoting illness OR more likely he'll simply face a successful primary challenger/s, as Lyndon Johnson did in 1968).