"In some respects, the goal of a world free of nuclear weapons is like the top of a very tall mountain. From the vantage point of our troubled world today, we can't even see the top of the mountain, and it is tempting and easy to say we can't get there from here. But the risks from continuing to go down the mountain or standing pat are too real to ignore. We must chart a course to higher ground where the mountaintop becomes more visible."
G. Shultz, W. Perry, H. Kissinger, S.Nunn, "Toward a Nuclear Free World", The Wall Street Journal, 15 January 2008.