The prime minister said three things to me here in Davos that stood out as being of some significance.

Although he said it was perfectly possible that EU leaders would agree to the reforms he wants at the forthcoming summit in mid-February - such that he could recommend the UK remains in the EU - he was adamant that "getting this right is more important than getting on with it".

In other words, he is conditioning us for a possible flop - even though I emerged from the interview thinking he believes there is a better than evens chance of a deal in February (France and the Netherlands may disagree).

Secondly, he was completely unambiguous that the UK will not take a single additional refugee if the rest of the EU does what is currently under discussion, namely to lessen the burden on Germany, Hungary and Sweden by distributing migrants more evenly across the continent.

Thirdly, he confirmed that even if he loses the referendum he won't be resigning (if he can help it), because he does not want the question of whether he remains or leaves (ha ha) in effect on the referendum ballot paper.

The prime minister on negotiating to get an EU deal by February:

On campaigning to stay in the EU while the issue of the distribution of migrants remains unsolved:

His stance on the "Dublin" rule:

Watch the full interview here: