Donald Trump’s decision to stop sharing US intelligence with Ukraine marks a dramatic turning point in the ongoing war. It means, in brutal terms, that US satellites will continue to monitor the movements of Russian bombers, but no longer transmit information to the Ukrainian authorities. They will see the missiles take off, directed against civilian buildings, hospitals, power plants, railway networks and roads, but will remain silent.

This is not just a step backwards in military support: it is a political choice that changes the US role on the global stage. Without intelligence, Ukraine will be even more vulnerable, forced to fight blindly against an adversary that enjoys a growing strategic advantage. For Russia, however, an opportunity opens up: to strike with greater precision and impunity, accelerating the attrition of Kyiv and bringing the showdown closer.

The stakes are clear. Ukraine’s abandonment on the intelligence front is more than a betrayal of an ally, it is a signal to all traditional US partners: no one is safe. If Washington can turn its back on Kyiv today, who will guarantee that tomorrow it will not do the same to Taiwan, the Baltic states or any other ally under attack?

And again, if the United States can subvert its own strategic choices in the space of a few days, who will no longer be able to rely on their alliance, on the treaties signed with them, on the commitments made? The principle ‘Pacta sunt servanda’ would become just a memory and with it the principle of solidarity of democracies.

In the long run, this decision could redefine the world order. The United States is no longer the power that guarantees the security of the West, but a country that reasons solely on the basis of short-term advantages ready to close in on itself, leaving room for Russia and China, or accepting with them a partitioning of the world based solely on power relations and not on the rule of law. Should Trump’s policy turn into a systematic refusal to protect its allies, America risks becoming no longer a bastion of democracy, but the most powerful rogue state in history.