You can have the most advanced and efflorescent of cultures. Get your politics wrong, however, and everything stands to be swept away. This is not ancient history. This is Germany 1933... Politics is the moat, the walls, beyond which lie the barbarians. Fail to keep them at bay, and everything burns.

It is an old liberal theme that conservative ideas, being red in tooth and claw, cannot possibly emerge from any notion of the public good.

The Houthi have local religious grievances, being Shiites in a majority Sunni land. But they are also agents of Shiite Iran, which arms, trains, and advises them. Their slogan - 'God is great. Death to America. Death to Israel' - could have been written in Persian.

If you believe that health care is a public good to be guaranteed by the state, then a single-payer system is the next best alternative. Unfortunately, it is fiscally unsustainable without rationing.

You can have the most advanced and efflorescent of cultures. Get your politics wrong, however, and everything stands to be swept away. This is not ancient history. This is Germany 1933... Politics is the moat, the walls, beyond which lie the barbarians. Fail to keep them at bay, and everything burns.

There are cycles in American politics. US cycles are even more pronounced because we Americans have a totally entrepreneurial presidential system. We don't have parliamentary opposition parties with a shadow prime minister and shadow cabinets. Every four years, the opposition reinvents itself.

I believe in what I believe, and I think after all these years I've heard a lot of arguments, and I'm convinced by the superiority of the arguments that are made on the conservative side. I think that's a better way to run a society.