Perhaps Trump can be corralled, but if the pro-American faction within this administration wants to make itself felt, it has to be prepared to play as tough and rough as the pro-Putin faction from the president on down.

William P. Rogers was eventually fired by Nixon for his unwillingness to say and do all that Nixon wanted to defend Nixon during the Watergate scandal. That’s the fate hanging over all those who joined this administration hoping to make it better. Trump is determined to make it worse. He’s the president, and he’s backed in his anti-Ukraine views by the people he most cares about. The noisy resignation is the ultimate weapon of the political appointee, and people inside this administration who care about America’s good name had best be prepared to use it. Otherwise, they will be used as fools and fronts in an administration that seems to be placing Russian interests ahead of America’s own.

-David Frum in The Atlantic