What is absolutely clear is that if Trump is the nominee, Republicans cannot win. Maybe they can't win with Rubio or Cruz or Kasich. We don't know. But what is absolutely certain is that with Hillary Clinton locking up the Democratic base, she is going to win unless she has a strong contender who is going to be able to pull - not only bring the entire Republican Party on the side, but win moderates. Donald Trump cannot do that.

When it comes to trade, when it comes to standing up to countries like North Korea, when it comes to standing up to guys like Vladimir Putin, Donald Trump is not a conservative.

I have been writing about Hillary Clinton, I just actually looked this up, since 1998 when she was busy standing by when Suha Arafat was launching anti-Semitic tirades against Israel and the Jews.

I think a Donald Trump presidency raises a new kind of version of conservatism which more closely resembles a kind of Father Coughlin, America first populism and nativism and isolationism, than the confident, modern, cosmopolitan, thoughtful, engaged conservatism of Ronald Reagan and Paul Ryan.

In the Middle East there are two kinds of regimes - those that could be worse, and those that couldn't be worse.

I will never vote for Donald Trump.

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