washingtonpost.com/world/national-security/georgetown-students-shed-light-on-chinas-tunnel-system-for-nuclear-weapons When America was talking about the mobile MX missile system China when ahead and built it. Or that's what Phillip A. Karber claims. I have doubts and Karber's ties to Henry Kissinger don't inspire confidence. I can't post the direct link yet but if you Google search you will find it.