In a classified document approved in March, the president ordered U.S. forces to prepare for possible coordinated nuclear confrontations with Russia, China and DPRK.
Biden Approved Secret Nuclear Strategy Refocusing on Chinese Threat
https://www.nytimes.com/2024/08/20/us/politics/biden-nuclear-china-russia.html
In a classified document approved in March, the president ordered U.S. forces to prepare for possible coordinated nuclear confrontations with Russia, China and North Korea.