The move follows a fiery exchange between the two leaders on social media, with Medvedev — now Deputy Chairman of Russia’s Security Council — issuing warnings after Trump’s demands for Russia to halt the war in Ukraine or face severe sanctions.
Trump, writing on Truth Social, described Medvedev’s comments as “foolish” and said they could have "unintended consequences." He emphasized that his decision was purely precautionary, prioritizing the safety of the American people. “A threat was made, and we are responding carefully,” he said.
While Trump didn’t reveal the submarines' exact location or confirm whether they were nuclear-powered or nuclear-armed, his announcement rattled markets — particularly in Moscow, where the stock exchange saw a sharp drop.
The U.S. and Russia maintain the world's most powerful nuclear fleets, making any aggressive posturing between the two a serious concern for international stability.
Medvedev retaliated by accusing Trump of “playing with fire” and alluded to Russia’s automatic nuclear retaliation system — known as the “Dead Hand.” In response, Trump warned Medvedev to “watch his words,” accusing him of escalating global risk.
With tensions soaring and no clear resolution in sight, global leaders and citizens alike are growing increasingly uneasy about the consequences of this geopolitical standoff.