Amid Tension, China Blocks Crucial Exports to Japan - New York Times http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNHTUxiSUU4T78xA1cPAo3O3IDnvLA&url=http://feeds.nytimes.com/click.phdo?i%3D5d3f925dc929e5731decea450bfbfecf