The U.S. has always reserved the right to strike first with nuclear weapons, it’s been part of deterrence strategy since the Cold War. Biden simply reiterated a long-standing strategic principle. It doesn’t mean Biden has his finger on the big red button.
Anywho, it’s irrelevant in the face of total Russian battlefield and logistical incompetence — the Ukrainians will win this war all on their own.
Still don't see what me calling out the claim Zelensky is gonna go it alone when he's whining for equipment from everyone else has to do with anything else. Deflect all you want and I'm not peaking, I don't do acid.