an end to nuclear weapons?

has obama spoken aloud what millions around the world have dreamed a long time? of a world free of nuclear weapons? so-called "realists" have resisted all moves toward abolition, imagining that more and harsher threats against all "enemies" will lead to security. but asserting dominance has never brought acquiescence. the only way to peace and security is to lead by example. we cannot continue to lecture hypocritically other countries for seeking the very weapons we possess by the thousands. an excerpt from Obama's speech in Prague below:

' The existence of thousands of nuclear weapons is the most dangerous legacy of the Cold War. No nuclear war was fought between the United States and the Soviet Union, but generations lived with the knowledge that their world could be erased in a single flash of light. Cities like Prague that had existed for centuries would have ceased to exist. Today, the Cold War has disappeared but thousands of those weapons have not. In a strange turn of history, the threat of global nuclear war has gone down, but the risk of a nuclear attack has gone up. More nations have acquired these weapons. Testing has continued. Black markets trade in nuclear secrets and materials. The technology to build a bomb has spread. Terrorists are determined to buy, build or steal one. Our efforts to contain these dangers are centered in a global nonproliferation regime, but as more people and nations break the rules, we could reach the point when the center cannot hold. . . Just as we stood for freedom in the 20th century, we must stand together for the right of people everywhere to live free from fear in the 21st. And as a nuclear power -as the only nuclear power to have used a nuclear weapon - the United States has a moral responsibility to act. We cannot succeed in this endeavor alone, but we can lead it. So today, I state clearly and with conviction America's commitment to seek the peace and security of a world without nuclear weapons.'