It means there is now no credible way for President Donald Trump to claim the Russia investigation is a hoax, made up, fake news or a witch hunt.
It raises questions about who higher up the chain of command in Trump’s orbit — possibly even including the President himself — is in Mueller’s sights after he agreed to what appears to be a fairly favorable deal with the retired general.
Above all, Flynn’s plight ensures the dark Russia cloud that has overshadowed everything the administration has done for 10 months is unlikely to lift soon — and may well thicken.
Friday’s staggering developments did not prove that Trump or other senior aides colluded with Russia to throw the 2016 election — the centerpiece of Mueller’s assignment.
But they make clear that the Mueller probe is marching deep inside the President’s tightest inner circle and is threatening officials and family members it would be …