The reality of Canadian history is that we've been willing to do the important things the world demanded of us: fighting in World War II, in Korea, in the Balkans, where we were involved in offensive military operations, and in Afghanistan, where we have made disproportionate contributions.

Move around, be nomadic, make each day a new horizon.

Karzai is Afghanistan's first democratically elected president. He brought the international community into partnership on an unprecedented level, and he championed a new constitution that is liberal, democratic and still very Afghan. All of that does reflect a vision. But he's presided over a country that is still in conflict, and he hasn't taken some of the difficult decisions his own government wanted him to take. On corruption, he hasn't been as decisive as he should've been. There are legitimate questions about him.

It will not be good enough simply to depend on one or two markets, we will need to embrace innovation, decide what we do well, and target those sectors in which, with investment and planning, we could make the whole world our client for keeps.

If the Taliban comes back to power, the impact would be devastating. A country that has made great strides, in terms of development indicators, would take a huge step backwards. Afghanistan's national economy would be devastated.

Everyone in Afghanistan and Pakistan is a potential target. My heart goes out to the UN family in Afghanistan: in spite of everything, they are showing fortitude. But they will need the support of the whole world at this difficult time.

Politics is a profession, and a form of service, and it should draw people who are passionate and have deep experience of the complex, changing nature of the world.