If Russia were to do something that it could do, it looks like it might even be preparing to do, to invade Ukraine and essentially to dismember it, this would be the one item that could reflect really badly on Trump because of the warm way he spoke about Putin.

Take all your dukes and marquesses and earls and viscounts, pack them into one chamber, call it the House of Lords to satisfy their pride and then strip it of all political power. It's a solution so perfectly elegant and preposterous that only the British could have managed it.

The conservative idea is not that government has no role. You might have argued that in the thirties when conservatives opposed the New Deal.

This is a formidable enemy. To dismiss it as a bunch of 'cowards' perpetuating 'senseless acts of violence' is complacent nonsense. People willing to kill thousands of innocents while they kill themselves are not cowards. They are deadly vicious warriors and need to be treated as such.

Guerrilla war is a test of wills. Obama's actual objectives - rollback in Iraq, containment in Syria - are not unreasonable. But they require commitment and determination. In other words, will. You can't just make one speech declaring war, then disappear and go fundraising.

Science has everything to say about what is possible. Science has nothing to say about what is permissible.

If fences don't work, why is there one around the White House.