The anti-missile shield needed to be developed at enormous cost and he can use the savings elsewhere.

反导防御系统的开发需要巨大开支，他可以使用这节省开支到别的地方。

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Earlier this month, Obama said he would move ahead with the missile shield as Iran remained a "real threat" but added that the system needed to be "cost-effective and proven."

本月初，奥巴马说，他将推动导弹防御系统，因为伊朗仍是一个“真正的威胁”，但他补充说，该系统需要“成本效益和评估。”

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Nato says Russia has agreed to begin talks immediately on a European missile defence shield, a project first put forward by Washington that has long caused friction.

北约称俄罗斯已经同意立即开始启动欧洲导弹防御盾牌的谈话，这个由华盛顿发起的项目引起了很长一段时间的争议。

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When U.S.President Barack Obama announced last month that the old missile shield was being canceled, the Polish political establishment panicked.

VOA: standard.2009.10.22

Mr.Obama's announcement last month that he was canceling the planned Bush-era missile shield ruffled a lot of feathers in Poland.

VOA: standard.2009.10.21

Secretary Gates said that while the missile shield was never a threat to Russia, the new configuration will likely allay some of Moscow's concerns.

VOA: standard.2009.09.17

He was speaking as a senior Russian general revealed that Moscow is preparing a missile shield for Europe.

CNN: UK signals support for missile plan

The United States says the missile shield would protect against rogue states such as Iran and North Korea.

NPR: Tensions Rise in U.S.-Russia Relationship

Now it may be that President Putin thinks he can get long-term leverage as America discusses its anti-missile shield.

BBC: Jonathan Charles in Moscow