What I will remember most from my time in NATO is meeting children in the countries where I've gone to, to Moscow and to Kiev, I've met school children.
So seven new countries, three of them formerly part of the Soviet Union, and the others part of the Warsaw Pact, will become full members of NATO next year.
The rapid dissemination of technology and information offers entirely new ways of production, but it can also bring the spectre of more states developing weapons of mass destruction.
NATO and the EU have also agreed on permanent arrangements on consultation and cooperation between themselves.
