MOSCOW — Russian President Vladimir Putin issued a stark warning to Europe that Russia is “ready” for a fight if it “starts a war,” and he threatened to cut off Ukraine’s access to the sea in defiant comments at the “Russia Calling!” investment forum on Tuesday. He contextualised the remarks as reprisals for Western sabotage of peace discussions and “piracy” by Ukraine against Russian oil tankers, casting Russia as under siege but not afraid to escalate Dec. 3, 2025
Putin warns Europe of stalled peace talks.
Addressing business and political elites, Putin said that Russia did not want a broader conflict but cautioned that if European governments “suddenly want to start a war with us and start it, we are ready now.” His remarks, reported by Time, were delivered as the Kremlin hosted a U.S. delegation to hammer out a 28-point peace framework that would freeze the front lines while extracting concessions from both sides.
A senior aide to the Kremlin, Yuri Ushakov, admitted after nearly five hours of talks with U.S. Special Envoy Steve Witkoff and presidential adviser Jared Kushner that a stop to the war is “no closer.” However, all sides promised to continue talking. Moscow dismissed European counterproposals as “absolutely unacceptable,” according to reports by ABC News, while European leaders and the Ukrainian president, Volodymyr Zelensky, have repeatedly rejected any deal based on territorial surrender.
Putin vows to block Ukraine from its ports.
In the same news availability, Putin also said that Russia would respond to recent attacks on its oil-shipping “shadow fleet” by hitting Ukrainian infrastructure, and as a last resort “, cut Ukraine off from the sea” to halt what he described as maritime piracy. Recent days have seen Ukrainian naval drones hit or be accused of hitting numerous Russian-linked tankers bound to collect sanction-busting oil from the Black Sea, including one which was struck near the Turkish coast in an attack which Kyiv denies having carried out.
Reuters first reported the details of the tanker attacks and Putin’s statement, adding that he did not provide a specific operational plan to seal off Ukrainian ports, such as Odesa, which are still under government control in Kyiv. The threat has reinforced analysts’ view that it is part of Moscow’s long-held campaign to control the Black Sea as an energy export corridor and as a pressure point against neighbours — a strategy emphasised in recent research into Russia’s posture around the Black Sea.
A pattern of Putin brinkmanship against Europe
European officials read Putin’s latest warning as part of an overall campaign to intimidate governments that provide Ukraine with arms and impose sanctions. After launching the full-scale invasion in 2022 and 2023, he repeatedly invoked the spectre of nuclear escalation; suspended participation in the New START arms-control treaty in 2023 while pledging to put new strategic nuclear systems on what he called “combat duty,” moves that Western governments said set up more risk for the world.
A previous Atlantic Council analysis said such nuclear signalling was already undermining arms deliveries and other steps advancing Kyiv’s military deterrent by spooking risk-averse leaders, and that failure to push back would encourage a new form of blackmail. A study by the Brookings Institution in 2024 reached a similar conclusion: Russia’s nuclear rhetoric has since migrated toward “war deterrence,” an atmosphere designed to bring pressure on Europe and the United States to confine their support for Ukraine, not necessarily end the conflict at once.
For Ukraine, Putin’s two messages — that Russia is prepared to go to war with Europe and could one day cut its access to the sea — illustrate how battlefield pressure, energy leverage and nuclear threats are related instruments of Kremlin policy. Now, European governments are left grappling with maintaining military and economic support for Kyiv while refraining from steps that would give Putin the fight he says he does not want, even as he continues to threaten to dare.
