why didn't he say so earlier, when it was actually possible to impeach the president? https://twitter.com/peterbakernyt/status/1273320193373229059

a wide variety of options were open to Bolton. He could have spoken to Robert Mueller. He could have given evidence in the House. He could have convened Republican Senators - they would have listened to him - to tell them how dangerous the president is.

Instead he stayed silent. Some combination of cowardice arrogance, belief in his own need to maintain influence and greed - he thought he could sell this book - prevented him from behaving with patriotism or honor.

All of his life he thought he was pushing America's interests around the world. But when he had the opportunity to do something truly important for America - to torpedo this disastrous presidency - he failed.