South Korea is upgrading its participation in a U. S., led international campaign to disrupt the traffic of weapons of mass destruction, a step it long avoided to prevent angering Pyongyang.

韩国加紧参加美国领导的中断大规模杀伤性武器扩散的国际项目，韩国长时间避免参加，为了避免激怒平壤。

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S. -north Korean relations and without the prospect of serious talks, Pyongyang ended the moratorium in 2006 and conducted long-range missile launches that year and in 2009.

鉴于普遍恶化的美朝关系，以及正式会谈前景不明，平壤开始了2006年中断的试验，并于当年和2009年进行了远程导弹发射。

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The U. S. and its Asian Allies have detected in recent weeks what they have said are signs that Pyongyang is preparing to test-launch its long-range Taepodong-2 missile.

近几周来，美国及其亚洲盟友已经侦察到了平壤的一些动作，他们说这些迹象显示平壤正在准备试射远程大浦洞- 2号导弹。

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Pyongyang says its nuclear arsenal is justified, given what it calls a U.S.

VOA: standard.2010.04.11

South Korean analysts say the North's notification of its plans is aimed at lending legitimacy to the launch, which Pyongyang says is part of a space research program.

VOA: standard.2009.03.12

Ri Gun is North Korea's second most senior envoy in multinational talks aimed at ending Pyongyang's nuclear weapons programs.

VOA: standard.2009.10.23

The US and North Korea's neighbours fear Pyongyang's ultimate goal is to put a nuclear warhead on a long-range missile that could target the west coast of the US, but it is not believed to have mastered the technology yet.

BBC: North Korea in nuclear warning after UN rocket resolution

Unfortunately, the signals currently being sent by the United States and its allies appear likely, at best, to encourage uncertainty about the West's determination to thwart Pyongyang's ambitions.

CENTERFORSECURITYPOLICY: Center For Security Policy

Russian Foreign Minister Sergei Lavrov condemned Pyongyang's actions as "unacceptable", Interfax news agency said.

BBC: News - North Korea 'readies rocket force' after US stealth flights