NATO was constructed on the - with the reason, whether one believes it or not, that it was going to defend Western Europe from Russian assault. Once the Berlin Wall fell and the Soviet Union was beginning to collapse, that reason was gone. So, first question: why does NATO exist?
NATO was built to counteract the Soviet Union in its day and time. At this point there is no threat coming from the Soviet Union, because there is no Soviet Union anymore. And where there was the Soviet Union once, there is now a number of countries, among them the new and democratic Russia.
The dangers of an Afghan collapse are many: Afghan deaths, a loss of American prestige, a loss of NATO prestige, a moral blow to U.S. troops and veterans, a Taliban resurgence, huge setbacks for women, and greater power for Pakistan and Pakistani extremists.
I bear solemn witness to the fact that NATO heads of state and of government meet only to go through the tedious motions of reading speeches, drafted by others, with the principal objective of not rocking the boat.
Today, hundreds of millions dwell in freedom, from the Baltic to the Adriatic, from the Western Approaches to the Aegean. And while we must never take this for granted, the first purpose of the European Union - to secure peace - has been achieved and we should pay tribute to all those in the EU, alongside Nato, who made that happen.
I think there is a good deal of promise in those discussions as well. I think there is a range of matters that might be discussed between NATO and Russia that can provide a mechanism for talking through these issues, a way to give reassurance on these issues.
We have a firm commitment to NATO, we are a part of NATO. We have a firm commitment to Europe. We are a part of Europe.
Following the end of the Cold War, there was much discussion concerning the point of NATO. In the event, it was reinvented as a means of reducing Russia's reach on its western frontiers and seeking to isolate it. Its former East European client states were admitted to NATO, as were the Baltic states.
Nato allies have been looking at various missile-defence options for some time. Nato itself is developing protections for our deployed troops.
The United States, obviously, has a great interest in helping to maintain peace and security in Europe, and we have a formal alliance, NATO, to do so.