John Bolton: “It would have provoked -- it would have certainly risked provoking a constitutional crisis.”

They’re drinking vodka straight out of the bottle in the Kremlin tonight. It was a great day for Moscow.

Look, Trump has said many times, including in public, that he thinks if he has good relations with a foreign head of state, then the United States itself has good relations with that country and the converse is also true.

I think the only explanation to talk about any of this in public is to put more pressure on Ukraine, to make more concessions.

I think it's really despicable to stop providing the intelligence to Ukraine. This is all part of how Trump does business. It's all personal.