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Nuclear Security Summit

Streets are closed and will reopen about 8 p.m. today. Access to the security zone around the Walter E. Washington Convention Center will be restricted. People entering the area will be required to show identification and will be subject to inspection. All travel will be extremely difficult and will take more time.


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46 nations join U.S. in nuclear pact
Article | President Obama persuaded 46 countries Tuesday to sign on to a plan to put the world's nuclear material beyond the reach of terrorists within four years, but the commitments are voluntary, and experts said reaching the goal will be difficult.

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