From now on, the Trump-Russia affair, the investigation that dominated the first years of Donald Trump’s presidency, will be divided into two parts: before and after the release of the Mueller report. Before the special counsel’s findings were made public last month, the president’s adversaries were on the offensive. Now, they are playing defense.

The change is due to one simple fact: Mueller could not establish that there was a conspiracy or coordination between Russia and the Trump campaign to fix the 2016 election. The special counsel’s office interviewed 500 witnesses, issued 2,800 subpoenas, executed nearly 500 search-and-seizure warrants, and obtained nearly 300 records of electronic communications, and still could not establish the one thing that mattered most in the investigation.