President Obama hosts leaders from more than 50 countries in Washington DC for a fourth and final Nuclear Security Summit.
This a high-level diplomatic process that started and will end during his watch. However, Russia will be a no-show as it protests U.S.-led sanctions over the Ukraine conflict.
Nuclear Security Summit No. 4: What Is It Good For? http://t.usnews.com/Zj6wm9?src=usn_tw
Everything you need to know about Obama's final Nuclear Security Summit http://www.motherjones.com/politics/2016/03/obama-nuclear-security-summi...
Street closures and traffic restrictions during 2016 Nuclear Security Summit http://www.fox5dc.com/news/local-news/114644921-story
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