The whole reason I moved to the U.S. to be coached by Alberto Salazar is to be able to improve 1 or 2 per cent. I was sick of coming sixth in the world, seventh in the world, and get close to a medal, but not quite there, half-a-second.

Growing up, I would never have thought that I'd be a double Olympic champion, with a lovely home and beautiful kids.

I don't know much about politics, but you have to look at it with the bigger picture and think what's best for us now, what's best for us in 10 years' time, what's best for our kids' kids' future - and I don't know.

Look at my success. I didn't achieve it overnight. It has been the product of many years' struggle, and every year, my times have shown gradual improvement.