For decades, nuclear weapons did not figure prominently in China’s military planning. However, recent satellite images suggest that the country may be looking to quintuple its nuclear arsenal. Why is China changing strategy now?Guest: David E. Sanger, a White House and national security correspondent for The New York Times.  Sign up here to get The Daily in your inbox each morning. And for an exclusive look at how the biggest stories on our show come together, subscribe to our newsletter. Background reading: Is China scrapping its “minimum deterrent” strategy and joining an arms race? Or is it merely looking to create a negotiating card?For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.