Tackling deprivation around the world is a moral imperative and firmly in Britain's national interest.

All of Britain's aid is spent in Britain's national interests, and some of it contributes to Britain's national security as well.

I wanted to put the national interest before my personal interests.

My belief is that the nation-state remains the one entity that can function, the one entity that can demand sacrifice from its constituents in the national interest.

What governments and people don't realise is that sometimes the collective interest - the international interest - is also the national interest.

It's time to put the national interest before the interests of Wall Street.