核安全峰会（Nuclear Security Summit）于4月13日上午在华盛顿举行全体会议，美国总统奥巴马在开幕式上致辞。

Part II

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THE PRESIDENT: Good morning, everybody. I'd like to get started. Let me begin by thanking all of you for your participation last night. I thought it was a very important discussion.

总统：各位早上好。现在会议开始。首先感谢诸位参加昨晚的活动，我认为我们进行了非常重要的讨论。

Before I begin, I want to take this moment once again to acknowledge the terrible tragedy that struck the Polish people this weekend. We are joined today by a distinguished delegation from Poland, led by Ambassador Kupiecki. Mr. Ambassador, all of us were shocked and deeply saddened by the devastating loss of President Kaczynski, the First Lady, and so many distinguished civilian and military leaders from your country. This was a loss, not just for Poland, but for the world.

在进入会议程序之前，我想利用这一时刻再次就上个周末发生的悲惨事件向波兰人民表示慰问。今天，由库比埃基大使率领的尊贵的波兰代表团在此参加会议。大使先生，我们大家都为痛失卡钦斯基总统、第一夫人和贵国如此众多的军政领导人而深感震惊和哀伤。这不仅是波兰的损失，也是世界的损失。

As a close friend and ally, the United States stands with Poland and Poles everywhere in these very difficult days. As an international community, I know that we will all rally around the Polish people, who have shown extraordinary strength and resilience throughout their history. So our hearts go out to your people. Our thoughts and prayers are with them. We join them in this time of mourning. And so, if everybody is agreeable, I would like to ask for a moment of silence to show that solidarity and to honor those who were lost.

在这些困难的日子里，美国作为亲密的盟友与波兰和全世界的波兰人站在一起。作为国际大家庭，我知道我们大家都会团结在波兰人民的周围，波兰人民在其整个历史中始终显示出非凡的力量和坚毅的精神。我们对贵国人民深表同情。我们与他们一道思念和祈祷。我们在这一时刻与他们共同哀悼。为此，如果大家同意，我提议大家默哀片刻，以表示我们心心相连，并向遇难者表示敬意。

(Pause for moment of silence.)

（默哀）

Thank you. It is my privilege to welcome you to Washington and to formally convene this historic summit. We represent 47 nations from every region of the world, and I thank each of you for being here. This is an unprecedented gathering to address an unprecedented threat.

谢谢。能够在此欢迎你们来到华盛顿，正式举行这个历史性峰会，我深感荣幸。我们代表了来自全世界各地区的47个国家，我感谢你们每一个人的光临。这是一次为应对前所未有的威胁而举行的史无前例的会议。

Two decades after the end of the Cold War, we face a cruel irony of history -- the risk of a nuclear confrontation between nations has gone down, but the risk of nuclear attack has gone up.

在冷战结束20年后，我们面对历史的无情讽刺——国家之间发生核对抗的风险下降了，但核攻击的危险却上升了。

Nuclear materials that could be sold or stolen and fashioned into a nuclear weapon exist in dozens of nations. Just the smallest amount of plutonium -- about the size of an apple -- could kill and injure hundreds of thousands of innocent people. Terrorist networks such as al Qaeda have tried to acquire the material for a nuclear weapon, and if they ever succeeded, they would surely use it. Were they to do so, it would be a catastrophe for the world -- causing extraordinary loss of life, and striking a major blow to global peace and stability.

可能被出售、盗窃和制成核武器的核材料存在于数十个国家。哪怕是最少量的钚——苹果般大小的钚——都有可能造成数十万无辜者的伤亡。“基地”组织之类的恐怖网络企图获取制造核武器的材料，他们一旦得逞，毫无疑问会使用这种武器。如果他们这么做，将给世界带来巨大的灾难，造成生命的巨大损失，使世界和平与稳定遭受重大的打击。

In short, it is increasingly clear that the danger of nuclear terrorism is one of the greatest threats to global security -- to our collective security.

简言之，人们越来越清楚地看到，核恐怖主义危险构成对全球安全，对我们的共同安全最重大的威胁之一。

And that's why, one year ago today in -- one year ago in Prague, I called for a new international effort to secure all vulnerable nuclear materials around the world in four years. This is one part of a broader, comprehensive agenda that the United States is pursuing -- including reducing our nuclear arsenal and stopping the spread of nuclear weapons -- an agenda that will bring us closer to our ultimate goal of a world without nuclear weapons.

正是因为这个原因，一年前的今天——一年前我在布拉格呼吁国际社会作出新的努力，用四年时间确保世界各地所有易散失的核材料得到安全保障。这是美国正在寻求的、包括削减我们的核库存和制止核扩散在内的、更广泛更全面的议程的一个组成部分。该议程将使我们更接近一个没有核武器的世界这一最终目标。

Over the past year, we've made progress. At the United Nations Security Council last fall, we unanimously passed Resolution 1887 endorsing this comprehensive agenda, including the goal of securing all nuclear materials. Last night, in closed session, I believe we made further progress, pursuing a shared understanding of the grave threat to our people.

在过去一年中，我们已经取得了进展。去年秋季，在联合国安理会的会议上，我们一致通过了第1887号决议，支持此一综合性议程，包括保障全部核材料安全的目标。我认为，在昨晚的非公开会议中，我们努力尝试就各国人民面临的这一严重威胁达成共识，取得了进一步的进展。