Yes, sir. A mistake.

We're making a terrible mistake.

Some now argue that large scale engagement in Afghanistan was a mistake.

My change was possible, because I didn't focus on what can go wrong.

Well, working with the safe organisms that we normally work with, the chance of an accident happening with somebody accidentally creating, like, some sort of superbug, that's literally about as probable as a snowstorm in the middle of the Sahara Desert.

Some now argue that large scale engagement in Afghanistan was a mistake. But, in the mirror of history, we can see that the greater mistake has been to abandon the country altogether.

As usual, Merkel has a critical role to play. Her endorsement of a candidate whom she knew Cameron would vehemently oppose was a serious mistake, because it strengthened the hand of those in the UK who want to leave the EU.

Well, working with the safe organisms that we normally work with, the chance of an accident happening with somebody accidentally creating, like, some sort of superbug, that's literally about as probable as a snowstorm in the middle of the Sahara Desert.