If we get the capabilities, NATO, along with the European Union, can do amazing things.
For years, we have heard warnings that Europe needs to contribute more to NATO's capability.
Globalisation will make our societies more creative and prosperous, but also more vulnerable.
For years, European leaders have pointed out that Europe is an economic giant, but a military pygmy.
You've got to be able to act when it's necessary to act. And you've got to be able to act where the threat is.
NATO and the EU have also agreed on permanent arrangements on consultation and cooperation between themselves.
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.
And, perhaps most importantly, regional conflicts will again and again confront us with a cruel choice between costly engagement and costly indifference.
And most countries are now reducing the number of conscripts and increasing the professionals that are available because they're available on short notice.
But we acted pre-emptively in Kosovo in 1999 to stop Milosevic from doing what he was doing and increasingly doing the ethnic cleansing in a systematic way.