State Department is reportedly concerned China is conducting nuclear tests

A new arms-control report expected to be made public by the State Department shows the United States is concerned that China is conducting secret nuclear tests despite a pledge against doing so, The Wall Street Journal reports.There's reportedly no proof China is violating the Comprehensive Nuclear Test Ban Treaty, and the alleged tests are reportedly not very powerful, but Washington's suspicions are driven by "high tempo" activity at China's Lop Nur test site, extensive excavations at the site