Russian President Vladimir Putin said Thursday that the conflict in Ukraine had characteristics of a "global" war and did not rule out strikes on Western countries.
The Kremlin strongman spoke out after a day of frayed nerves, with Russia test-firing a new generation intermediate-range missile at Ukraine -- which Putin hinted was capable of unleashing a nuclear payload.
Ukraine's President Volodymyr Zelensky branded the strike a major ramping up of the "scale and brutality" of the war by a "crazy neighbour", while Kyiv's main backer, the United States, said that Russia was to blame for escalating the conflict "at every turn".
Intermediate-range missiles typically have a reach of up to 5,500 kilometres (3,400 miles) -- enough to make good on Putin's threat of striking the West.
In a defiant address to the nation, Russia's president railed at Ukraine's allies granting permission for Kyiv to use Western-supplied weapons to strike targets on Russian territory, warning of retaliation.