Commentary “Never interfere with your enemy when he is making a mistake,” is one of Napoleon Bonaparte’s contributions to military strategy. But China is doing one turn better, loudly advocating for President Joe Biden to make a crucial strategic nuclear mistake, perhaps to be included in the next Nuclear Posture Review due in early 2022. Apparently, Biden seeks to declare nuclear deterrence and, if needed, nuclear retaliation, as the “sole purpose” of the U.S. strategic nuclear arsenal. Such a declaration would almost amount to an adoption of a “no first use” (NFU) nuclear weapons doctrine. Nine days before leaving the Office of the Vice President on Jan. 11, 2017, Biden gave remarks on “Nuclear Security” in which he endorsed both concepts: “In our 2010 Nuclear Posture Review—we made a commitment to create the conditions by which the sole purpose of nuclear weapons would be to deter others from launching a …