Former CIA director John Brennan testified before the House Intelligence Committee on Tuesday that he was not sure if there was any evidence of collusion between the Russian government and Donald Trump’s presidential campaign. Yet Democrats are thrilled by his testimony, because he said there were contacts between Russian officials and some “U.S. persons involved in the Trump campaign,” and hence an FBI investigation was warranted. Note that there is nothing new in what Brennan said. The New York Times reported on January 19 — in a story timed to appear on Inauguration Day — that the intelligence services had “intercepted communications” between several Trump “associates” and Russian officials. (The same story said there was “no conclusive evidence of wrongdoing.”) And last week, Reuters reported…