At present, America plays a leading role in the security of East Asia.

目前，美国在东亚安全中发挥了一种主导性作用。

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Social and economic dimensions of integration are lagging behind security cooperation. They are not as advanced as in East Asia.

社会、经济上的整合程度落后于区域安全上的合作，不及东亚超前。

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And the spread of nuclear weapons to more states is also an unacceptable risk to global security — raising the specter of arms RACES from the Middle East to East Asia.

核武器扩散到更多的国家也对全球安全构成了不可接受的威胁——在从中东到东亚各地引起对军备竞赛的担忧。

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The credibility of our security guarantees to allies and to partners especially in the Middle East and East Asia depends on our ability to project power despite these threats."

VOA: standard.2010.03.26

"If they put the pursuit of nuclear weapons ahead of regional stability and the security and opportunity of their own people, if they are oblivious to the dangers of escalating nuclear arms races in both East Asia and the Middle East, then they must be held accountable,"

VOA: standard.2009.09.23

And obviously we continue to work together very closely in terms of security in East Asia, whether that's issues of how North Korea operates and making sure that they actually implement a denuclearization process, or thinking about the long-term security structures in East Asia.

WHITEHOUSE: President Obama Meets with Prime Minister Kan at G8 Summit

With the increasing severity of the security environment in East Asia, the importance of the Japan-U.S. alliance is increasing evermore.

WHITEHOUSE: President Obama's Bilateral Meeting with Prime Minister Noda of Japan | The White House

"With the increasing severity of the security environment in East Asia, the importance of the Japan-US alliance is increasing, " Mr Noda said.

BBC: Obama at Asean summit urges nations to ease sea rows