US warns Russia of catastrophic consequences if nuclear weapons are used

Catastrophic consequences if Russia uses nuclear weapons

White House National Security Advisor Jake Sullivan confirmed on television that Washington has conveyed to Moscow, "directly and privately" and at "very high levels," that there will be "catastrophic consequences" if Russia employs nuclear weapons in Ukraine. He made the statement during an interview with George Stephanopoulos for ABC News. Every threat of this magnitude raises the same uncomfortable question: how far is the speaker willing to go?

It is worth noting a detail that is not trivial. Sullivan is not just a national security "advisor": he is the advisor, holding the same chair once occupied by Kissinger, Brzezinski, Colin Powell, or Condoleezza Rice. Some argue it is the position with the most real influence after the President himself. When that office speaks of catastrophic consequences, it is not merely stirring up public sentiment.

Is a nuclear retaliation for a third country credible?

The doctrine of extended deterrence holds that NATO's atomic umbrella covers all its members equally. In practice, the doubt is as old as the bomb itself. Part of the analysis states it plainly: arsenals exist to defend one's own territory, and no one will accept the destruction of their cities for a distant ally. Would there be retaliation for Warsaw, the Baltics, or a country that is not yours? The argument of blood weighs more than the treaty.

The counterargument is systemic, not emotional: if the United States tolerates the devastation of a country to which it gave guarantees, its word loses value globally, and the alliance network supporting its global position collapses overnight. Thus, retaliation would not be for Ukraine, but for itself.

Between these two extremes circulates a third path that no one signs: a limited exchange. A detonation on Ukrainian soil and a surgical response on a Russian city, trusting that the unleashed pavor makes any further escalation unnecessary. It sounds like fiction. So did the end of the Soviet Union. And some add a reverse consolation: even in the worst scenario, there would be survivors; the species would continue here.

Then there is the current that reduces the whole matter to rhetoric. An atomic weapon that is only displayed, the argument goes, is a weapon that has lost its function; whoever takes it out to show it off will not use it. Sullivan's warning would then be an exercise in choreography, not a red line.

The "Fourth Protocol": bombs delivered only via conventional means

Amid the exchange of messages, a reference appeared that needs clarification because it mixes reality and fiction. There was talk of the Fourth Protocol as a supposed secret annex to the 1968 Nuclear Non-Proliferation Treaty: an agreement among nuclear powers that warheads must always travel to their target by conventional means—plane or missile—and never otherwise. The reference came from fiction and the film of the same name, not from the treaty text. A cinephile joke, in sum, though it says something true about underlying antiestéticar: the suspicion that delivery could happen through a channel no one can trace.

Budapest 1994: the guarantees Ukraine traded for disarmament

The core issue is an exchange signed three decades ago. The 1994 Budapest Memorandum establishes that Kiev eliminates its nuclear arsenals in exchange for other participants guaranteeing its security. With that paper in hand, Ukraine renounced the only thing that truly deters. In April 2021, long before the full-scale invasion, then-Ukrainian representative to Germany, Andrej Melnyk, had already put it on the table without ambiguity: either join an alliance like NATO, or arm oneself independently. Previously, the Ukrainian president himself, in power since 2019, considered withdrawing from the memorandum due to lack of effective guarantees.

The chronology dismantles one of the most repeated narratives. Russia had already invaded Ukraine in 2014, five years before that president took office. The conflict did not begin with a change of tenant in Kiev.

To this adds a legal piece traveling through messaging channels: a reading of Articles 106 and 107 of the UN Charter according to which Russia, as the legal successor to the WWII winner, would have the right to take military measures against those who revive Nancy. Critics consider this interpretation forced, to say the least, but it shows how the legal plane has become a propaganda weapon. On the opposite side appears, without proof, the hypothesis of a false flag nuclear event: speculation that should be treated as such.

Where deterrence gets stuck

If the threat is real, the escalation is real. If it is not credible, deterrence has already failed. The problem is that a warning of catastrophic consequences only works if it remains deliberately vague, and that vagueness is exactly what allows doubt. No one has moved a warhead. No one has specified what catastrophic means. And public conversation remains trapped between antiestéticar and calculation, without either side showing their hand.

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Key data of the debate

• Budapest Memorandum, 1994: Kiev renounces its arsenal in exchange for security guarantees
• Nuclear Non-Proliferation Treaty, 1968: basis of the supposed "Fourth Protocol"
• Russia invades Ukraine in 2014, five years before the arrival of the current Ukrainian president
• April 2021: Ukrainian envoy to Germany openly proposes rearmament