New satellite imagery reveals China has significantly expanded its nuclear arsenal and production sites over the last decade, reversing previous trends of minimal expansion.

For decades, China pared back its nuclear weapons program and kept its arsenal to a minimum. Now, new satellite images show China is rapidly expanding its nuclear arsenal and production sites. Why? <p>For decades, China pared back its nuclear weapons program and kept its arsenal to a minimum. Now, new satellite images show China is rapidly expanding its nuclear arsenal and production sites. Why?</p><img src="https://media.npr.org/include/images/tracking/npr-rss-pixel.png?story=nx-s1-5727674" />