I don't think the Republican Party, or I should say the Republican Party as the vehicle for modern American conservative ideas, survives with Donald Trump.

The United States survives so long as at least one of its major parties is politically and intellectually healthy.

I think a Donald Trump presidency sets up an Elizabeth Warren ascendancy. And it not Elizabeth Warren, someone of her ilk. And I think that's dreadful.

The dismissal of any of these people would send a useful signal to U.S. allies that the president has the nerve - and self-awareness - to make a change.

Hillary Clinton, as awful as I find her, is a survivable event. I'm not so sure about [Donald] Trump.

When George W. Bush decided to save the American position in Iraq by going against the advice of all of his wise men, of Jim Baker and the whole Iraq Study Group, and 90% of his administration, that was George W. Bush's decision. So we have to bear in mind that this isn't an administration we're electing. It's a person that we are electing.

I don't think the Republican Party, or I should say the Republican Party as the vehicle for modern American conservative ideas, survives with Donald Trump.